Home / 128,332,954,876.80-192,499,432,315.20-122,891,849,342.40

Finding the Fourth Proportional to 128,332,954,876.80, 192,499,432,315.20 and 122,891,849,342.40

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Solution

The fourth proportional to 128,332,954,876.80, 192,499,432,315.20 and 122,891,849,342.40 is: 184,337,774,013.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,332,954,876.80 : 192,499,432,315.20 = 122,891,849,342.40 : x
  2. Step 2: Convert to fraction form
    128,332,954,876.80/192,499,432,315.20 = 122,891,849,342.40/x
  3. Step 3: Cross multiply
    128,332,954,876.80x = 192,499,432,315.20 × 122,891,849,342.40
  4. Step 4: Simplify right side
    128,332,954,876.80x = 23,656,611,234,577,085,628,416
  5. Step 5: Solve for x
    x = 23,656,611,234,577,085,628,416/128,332,954,876.80
  6. Step 6: Final answer
    x = 184,337,774,013.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.