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Finding the Fourth Proportional to 115,352.40, 159,149.05 and 64,356.88

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Solution

The fourth proportional to 115,352.40, 159,149.05 and 64,356.88 is: 88,791.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,352.40 : 159,149.05 = 64,356.88 : x
  2. Step 2: Convert to fraction form
    115,352.40/159,149.05 = 64,356.88/x
  3. Step 3: Cross multiply
    115,352.40x = 159,149.05 × 64,356.88
  4. Step 4: Simplify right side
    115,352.40x = 10,242,336,414.61
  5. Step 5: Solve for x
    x = 10,242,336,414.61/115,352.40
  6. Step 6: Final answer
    x = 88,791.70

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1.5x scale

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.