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Finding the Fourth Proportional to 115,482.24, 159,354 and 65,171.52

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Solution

The fourth proportional to 115,482.24, 159,354 and 65,171.52 is: 89,930.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,482.24 : 159,354 = 65,171.52 : x
  2. Step 2: Convert to fraction form
    115,482.24/159,354 = 65,171.52/x
  3. Step 3: Cross multiply
    115,482.24x = 159,354 × 65,171.52
  4. Step 4: Simplify right side
    115,482.24x = 10,385,342,398.08
  5. Step 5: Solve for x
    x = 10,385,342,398.08/115,482.24
  6. Step 6: Final answer
    x = 89,930.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.