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Finding the Fourth Proportional to 109,650.73, 151,315 and 61,908.52

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Solution

The fourth proportional to 109,650.73, 151,315 and 61,908.52 is: 85,432.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,650.73 : 151,315 = 61,908.52 : x
  2. Step 2: Convert to fraction form
    109,650.73/151,315 = 61,908.52/x
  3. Step 3: Cross multiply
    109,650.73x = 151,315 × 61,908.52
  4. Step 4: Simplify right side
    109,650.73x = 9,367,687,703.80
  5. Step 5: Solve for x
    x = 9,367,687,703.80/109,650.73
  6. Step 6: Final answer
    x = 85,432.06

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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.