Home / 132,822,720.90-199,318,062.15-78,235,200.90

Finding the Fourth Proportional to 132,822,720.90, 199,318,062.15 and 78,235,200.90

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Solution

The fourth proportional to 132,822,720.90, 199,318,062.15 and 78,235,200.90 is: 117,402,267.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,822,720.90 : 199,318,062.15 = 78,235,200.90 : x
  2. Step 2: Convert to fraction form
    132,822,720.90/199,318,062.15 = 78,235,200.90/x
  3. Step 3: Cross multiply
    132,822,720.90x = 199,318,062.15 × 78,235,200.90
  4. Step 4: Simplify right side
    132,822,720.90x = 15,593,688,635,303,938
  5. Step 5: Solve for x
    x = 15,593,688,635,303,938/132,822,720.90
  6. Step 6: Final answer
    x = 117,402,267.70

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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.