Home / 119,689.64-165,278.04-74,445.20

Finding the Fourth Proportional to 119,689.64, 165,278.04 and 74,445.20

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Solution

The fourth proportional to 119,689.64, 165,278.04 and 74,445.20 is: 102,800.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,689.64 : 165,278.04 = 74,445.20 : x
  2. Step 2: Convert to fraction form
    119,689.64/165,278.04 = 74,445.20/x
  3. Step 3: Cross multiply
    119,689.64x = 165,278.04 × 74,445.20
  4. Step 4: Simplify right side
    119,689.64x = 12,304,156,743.41
  5. Step 5: Solve for x
    x = 12,304,156,743.41/119,689.64
  6. Step 6: Final answer
    x = 102,800.52

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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.