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Finding the Fourth Proportional to 80,513,999.60, 120,770,999.40 and 75,093,301.40

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Solution

The fourth proportional to 80,513,999.60, 120,770,999.40 and 75,093,301.40 is: 112,639,952.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,513,999.60 : 120,770,999.40 = 75,093,301.40 : x
  2. Step 2: Convert to fraction form
    80,513,999.60/120,770,999.40 = 75,093,301.40/x
  3. Step 3: Cross multiply
    80,513,999.60x = 120,770,999.40 × 75,093,301.40
  4. Step 4: Simplify right side
    80,513,999.60x = 9,069,093,058,323,420
  5. Step 5: Solve for x
    x = 9,069,093,058,323,420/80,513,999.60
  6. Step 6: Final answer
    x = 112,639,952.10

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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.