Home / 80,513,999.10-120,770,998.65-75,093,300.90

Finding the Fourth Proportional to 80,513,999.10, 120,770,998.65 and 75,093,300.90

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Solution

The fourth proportional to 80,513,999.10, 120,770,998.65 and 75,093,300.90 is: 112,639,951.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,513,999.10 : 120,770,998.65 = 75,093,300.90 : x
  2. Step 2: Convert to fraction form
    80,513,999.10/120,770,998.65 = 75,093,300.90/x
  3. Step 3: Cross multiply
    80,513,999.10x = 120,770,998.65 × 75,093,300.90
  4. Step 4: Simplify right side
    80,513,999.10x = 9,069,092,941,617,944
  5. Step 5: Solve for x
    x = 9,069,092,941,617,944/80,513,999.10
  6. Step 6: Final answer
    x = 112,639,951.35

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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.