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Finding the Fourth Proportional to 155,470.60, 233,033.10 and 85,400.20

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Solution

The fourth proportional to 155,470.60, 233,033.10 and 85,400.20 is: 128,005.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,470.60 : 233,033.10 = 85,400.20 : x
  2. Step 2: Convert to fraction form
    155,470.60/233,033.10 = 85,400.20/x
  3. Step 3: Cross multiply
    155,470.60x = 233,033.10 × 85,400.20
  4. Step 4: Simplify right side
    155,470.60x = 19,901,073,346.62
  5. Step 5: Solve for x
    x = 19,901,073,346.62/155,470.60
  6. Step 6: Final answer
    x = 128,005.38

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1.5x scale

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.