Home / 128,305,211.40-192,457,817.10-127,549,384.20

Finding the Fourth Proportional to 128,305,211.40, 192,457,817.10 and 127,549,384.20

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Solution

The fourth proportional to 128,305,211.40, 192,457,817.10 and 127,549,384.20 is: 191,324,076.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,305,211.40 : 192,457,817.10 = 127,549,384.20 : x
  2. Step 2: Convert to fraction form
    128,305,211.40/192,457,817.10 = 127,549,384.20/x
  3. Step 3: Cross multiply
    128,305,211.40x = 192,457,817.10 × 127,549,384.20
  4. Step 4: Simplify right side
    128,305,211.40x = 24,547,876,055,581,228
  5. Step 5: Solve for x
    x = 24,547,876,055,581,228/128,305,211.40
  6. Step 6: Final answer
    x = 191,324,076.30

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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.