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Finding the Fourth Proportional to 115,652.90, 159,691.47 and 88,752.80

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Solution

The fourth proportional to 115,652.90, 159,691.47 and 88,752.80 is: 122,548.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,652.90 : 159,691.47 = 88,752.80 : x
  2. Step 2: Convert to fraction form
    115,652.90/159,691.47 = 88,752.80/x
  3. Step 3: Cross multiply
    115,652.90x = 159,691.47 × 88,752.80
  4. Step 4: Simplify right side
    115,652.90x = 14,173,065,165.02
  5. Step 5: Solve for x
    x = 14,173,065,165.02/115,652.90
  6. Step 6: Final answer
    x = 122,548.29

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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.