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Finding the Fourth Proportional to 119,980.76, 165,591.92 and 74,067.20

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Solution

The fourth proportional to 119,980.76, 165,591.92 and 74,067.20 is: 102,224.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,980.76 : 165,591.92 = 74,067.20 : x
  2. Step 2: Convert to fraction form
    119,980.76/165,591.92 = 74,067.20/x
  3. Step 3: Cross multiply
    119,980.76x = 165,591.92 × 74,067.20
  4. Step 4: Simplify right side
    119,980.76x = 12,264,929,857.02
  5. Step 5: Solve for x
    x = 12,264,929,857.02/119,980.76
  6. Step 6: Final answer
    x = 102,224.14

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1.5x scale

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.