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Finding the Fourth Proportional to 115,163.78, 158,925.65 and 67,407.59

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Solution

The fourth proportional to 115,163.78, 158,925.65 and 67,407.59 is: 93,022.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,163.78 : 158,925.65 = 67,407.59 : x
  2. Step 2: Convert to fraction form
    115,163.78/158,925.65 = 67,407.59/x
  3. Step 3: Cross multiply
    115,163.78x = 158,925.65 × 67,407.59
  4. Step 4: Simplify right side
    115,163.78x = 10,712,795,115.96
  5. Step 5: Solve for x
    x = 10,712,795,115.96/115,163.78
  6. Step 6: Final answer
    x = 93,022.26

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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.