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Finding the Fourth Proportional to 155,209.20, 232,468.20 and 127,561.20

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Solution

The fourth proportional to 155,209.20, 232,468.20 and 127,561.20 is: 191,057.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,209.20 : 232,468.20 = 127,561.20 : x
  2. Step 2: Convert to fraction form
    155,209.20/232,468.20 = 127,561.20/x
  3. Step 3: Cross multiply
    155,209.20x = 232,468.20 × 127,561.20
  4. Step 4: Simplify right side
    155,209.20x = 29,653,922,553.84
  5. Step 5: Solve for x
    x = 29,653,922,553.84/155,209.20
  6. Step 6: Final answer
    x = 191,057.76

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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.