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Finding the Fourth Proportional to 120,167.52, 165,655.20 and 84,249.12

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Solution

The fourth proportional to 120,167.52, 165,655.20 and 84,249.12 is: 116,140.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,167.52 : 165,655.20 = 84,249.12 : x
  2. Step 2: Convert to fraction form
    120,167.52/165,655.20 = 84,249.12/x
  3. Step 3: Cross multiply
    120,167.52x = 165,655.20 × 84,249.12
  4. Step 4: Simplify right side
    120,167.52x = 13,956,304,823.42
  5. Step 5: Solve for x
    x = 13,956,304,823.42/120,167.52
  6. Step 6: Final answer
    x = 116,140.41

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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.