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Finding the Fourth Proportional to 155,497.60, 233,073.60 and 85,427.20

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Solution

The fourth proportional to 155,497.60, 233,073.60 and 85,427.20 is: 128,045.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,497.60 : 233,073.60 = 85,427.20 : x
  2. Step 2: Convert to fraction form
    155,497.60/233,073.60 = 85,427.20/x
  3. Step 3: Cross multiply
    155,497.60x = 233,073.60 × 85,427.20
  4. Step 4: Simplify right side
    155,497.60x = 19,910,825,041.92
  5. Step 5: Solve for x
    x = 19,910,825,041.92/155,497.60
  6. Step 6: Final answer
    x = 128,045.87

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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.