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Finding the Fourth Proportional to 115,332, 159,158.40 and 65,032.80

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Solution

The fourth proportional to 115,332, 159,158.40 and 65,032.80 is: 89,745.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,332 : 159,158.40 = 65,032.80 : x
  2. Step 2: Convert to fraction form
    115,332/159,158.40 = 65,032.80/x
  3. Step 3: Cross multiply
    115,332x = 159,158.40 × 65,032.80
  4. Step 4: Simplify right side
    115,332x = 10,350,516,395.52
  5. Step 5: Solve for x
    x = 10,350,516,395.52/115,332
  6. Step 6: Final answer
    x = 89,745.40

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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.