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Finding the Fourth Proportional to 115,658.48, 159,682.20 and 88,749.92

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Solution

The fourth proportional to 115,658.48, 159,682.20 and 88,749.92 is: 122,531.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,658.48 : 159,682.20 = 88,749.92 : x
  2. Step 2: Convert to fraction form
    115,658.48/159,682.20 = 88,749.92/x
  3. Step 3: Cross multiply
    115,658.48x = 159,682.20 × 88,749.92
  4. Step 4: Simplify right side
    115,658.48x = 14,171,782,475.42
  5. Step 5: Solve for x
    x = 14,171,782,475.42/115,658.48
  6. Step 6: Final answer
    x = 122,531.29

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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.