Home / 78,662,200.38-108,519,399.10-75,015,186.50

Finding the Fourth Proportional to 78,662,200.38, 108,519,399.10 and 75,015,186.50

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Solution

The fourth proportional to 78,662,200.38, 108,519,399.10 and 75,015,186.50 is: 103,488,116.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,662,200.38 : 108,519,399.10 = 75,015,186.50 : x
  2. Step 2: Convert to fraction form
    78,662,200.38/108,519,399.10 = 75,015,186.50/x
  3. Step 3: Cross multiply
    78,662,200.38x = 108,519,399.10 × 75,015,186.50
  4. Step 4: Simplify right side
    78,662,200.38x = 8,140,602,962,354,432
  5. Step 5: Solve for x
    x = 8,140,602,962,354,432/78,662,200.38
  6. Step 6: Final answer
    x = 103,488,116.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.