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Finding the Fourth Proportional to 155,351.60, 232,854.60 and 85,281.20

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Solution

The fourth proportional to 155,351.60, 232,854.60 and 85,281.20 is: 127,826.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,351.60 : 232,854.60 = 85,281.20 : x
  2. Step 2: Convert to fraction form
    155,351.60/232,854.60 = 85,281.20/x
  3. Step 3: Cross multiply
    155,351.60x = 232,854.60 × 85,281.20
  4. Step 4: Simplify right side
    155,351.60x = 19,858,119,713.52
  5. Step 5: Solve for x
    x = 19,858,119,713.52/155,351.60
  6. Step 6: Final answer
    x = 127,826.94

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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.