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Finding the Fourth Proportional to 156,352.71, 215,766.92 and 84,732.73

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Solution

The fourth proportional to 156,352.71, 215,766.92 and 84,732.73 is: 116,931.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,352.71 : 215,766.92 = 84,732.73 : x
  2. Step 2: Convert to fraction form
    156,352.71/215,766.92 = 84,732.73/x
  3. Step 3: Cross multiply
    156,352.71x = 215,766.92 × 84,732.73
  4. Step 4: Simplify right side
    156,352.71x = 18,282,519,847.71
  5. Step 5: Solve for x
    x = 18,282,519,847.71/156,352.71
  6. Step 6: Final answer
    x = 116,931.26

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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.