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Finding the Fourth Proportional to 125,532.66, 189,162.53 and 103,834.38

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Solution

The fourth proportional to 125,532.66, 189,162.53 and 103,834.38 is: 156,465.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,532.66 : 189,162.53 = 103,834.38 : x
  2. Step 2: Convert to fraction form
    125,532.66/189,162.53 = 103,834.38/x
  3. Step 3: Cross multiply
    125,532.66x = 189,162.53 × 103,834.38
  4. Step 4: Simplify right side
    125,532.66x = 19,641,573,502.61
  5. Step 5: Solve for x
    x = 19,641,573,502.61/125,532.66
  6. Step 6: Final answer
    x = 156,465.84

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.