Home / 191,451,319.20-287,182,820.54-74,862,018.72

Finding the Fourth Proportional to 191,451,319.20, 287,182,820.54 and 74,862,018.72

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Solution

The fourth proportional to 191,451,319.20, 287,182,820.54 and 74,862,018.72 is: 112,295,312.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,451,319.20 : 287,182,820.54 = 74,862,018.72 : x
  2. Step 2: Convert to fraction form
    191,451,319.20/287,182,820.54 = 74,862,018.72/x
  3. Step 3: Cross multiply
    191,451,319.20x = 287,182,820.54 × 74,862,018.72
  4. Step 4: Simplify right side
    191,451,319.20x = 21,499,085,687,327,880
  5. Step 5: Solve for x
    x = 21,499,085,687,327,880/191,451,319.20
  6. Step 6: Final answer
    x = 112,295,312.34

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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.