Home / 128,210,415.60-192,315,623.40-55,376,426.55

Finding the Fourth Proportional to 128,210,415.60, 192,315,623.40 and 55,376,426.55

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Solution

The fourth proportional to 128,210,415.60, 192,315,623.40 and 55,376,426.55 is: 83,064,639.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,210,415.60 : 192,315,623.40 = 55,376,426.55 : x
  2. Step 2: Convert to fraction form
    128,210,415.60/192,315,623.40 = 55,376,426.55/x
  3. Step 3: Cross multiply
    128,210,415.60x = 192,315,623.40 × 55,376,426.55
  4. Step 4: Simplify right side
    128,210,415.60x = 10,649,751,993,627,562
  5. Step 5: Solve for x
    x = 10,649,751,993,627,562/128,210,415.60
  6. Step 6: Final answer
    x = 83,064,639.83

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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.