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Finding the Fourth Proportional to 134,399.70, 185,468.17 and 73,143.28

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Solution

The fourth proportional to 134,399.70, 185,468.17 and 73,143.28 is: 100,935.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,399.70 : 185,468.17 = 73,143.28 : x
  2. Step 2: Convert to fraction form
    134,399.70/185,468.17 = 73,143.28/x
  3. Step 3: Cross multiply
    134,399.70x = 185,468.17 × 73,143.28
  4. Step 4: Simplify right side
    134,399.70x = 13,565,750,289.40
  5. Step 5: Solve for x
    x = 13,565,750,289.40/134,399.70
  6. Step 6: Final answer
    x = 100,935.87

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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.