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Finding the Fourth Proportional to 128,155.24, 176,837.70 and 73,704.52

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Solution

The fourth proportional to 128,155.24, 176,837.70 and 73,704.52 is: 101,702.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,155.24 : 176,837.70 = 73,704.52 : x
  2. Step 2: Convert to fraction form
    128,155.24/176,837.70 = 73,704.52/x
  3. Step 3: Cross multiply
    128,155.24x = 176,837.70 × 73,704.52
  4. Step 4: Simplify right side
    128,155.24x = 13,033,737,796.40
  5. Step 5: Solve for x
    x = 13,033,737,796.40/128,155.24
  6. Step 6: Final answer
    x = 101,702.73

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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.