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Finding the Fourth Proportional to 120,411.67, 180,734.15 and 58,125.91

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Solution

The fourth proportional to 120,411.67, 180,734.15 and 58,125.91 is: 87,245.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,411.67 : 180,734.15 = 58,125.91 : x
  2. Step 2: Convert to fraction form
    120,411.67/180,734.15 = 58,125.91/x
  3. Step 3: Cross multiply
    120,411.67x = 180,734.15 × 58,125.91
  4. Step 4: Simplify right side
    120,411.67x = 10,505,336,646.20
  5. Step 5: Solve for x
    x = 10,505,336,646.20/120,411.67
  6. Step 6: Final answer
    x = 87,245.17

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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.