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Finding the Fourth Proportional to 109,588.40, 151,229.40 and 61,843.76

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Solution

The fourth proportional to 109,588.40, 151,229.40 and 61,843.76 is: 85,342.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,588.40 : 151,229.40 = 61,843.76 : x
  2. Step 2: Convert to fraction form
    109,588.40/151,229.40 = 61,843.76/x
  3. Step 3: Cross multiply
    109,588.40x = 151,229.40 × 61,843.76
  4. Step 4: Simplify right side
    109,588.40x = 9,352,594,718.54
  5. Step 5: Solve for x
    x = 9,352,594,718.54/109,588.40
  6. Step 6: Final answer
    x = 85,342.93

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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.