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Finding the Fourth Proportional to 155,856.91, 233,785.36 and 71,687.87

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Solution

The fourth proportional to 155,856.91, 233,785.36 and 71,687.87 is: 107,531.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,856.91 : 233,785.36 = 71,687.87 : x
  2. Step 2: Convert to fraction form
    155,856.91/233,785.36 = 71,687.87/x
  3. Step 3: Cross multiply
    155,856.91x = 233,785.36 × 71,687.87
  4. Step 4: Simplify right side
    155,856.91x = 16,759,574,192.15
  5. Step 5: Solve for x
    x = 16,759,574,192.15/155,856.91
  6. Step 6: Final answer
    x = 107,531.80

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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.