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Finding the Fourth Proportional to 155,531.60, 233,124.60 and 85,461.20

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Solution

The fourth proportional to 155,531.60, 233,124.60 and 85,461.20 is: 128,096.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,531.60 : 233,124.60 = 85,461.20 : x
  2. Step 2: Convert to fraction form
    155,531.60/233,124.60 = 85,461.20/x
  3. Step 3: Cross multiply
    155,531.60x = 233,124.60 × 85,461.20
  4. Step 4: Simplify right side
    155,531.60x = 19,923,108,065.52
  5. Step 5: Solve for x
    x = 19,923,108,065.52/155,531.60
  6. Step 6: Final answer
    x = 128,096.85

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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.