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Finding the Fourth Proportional to 127,565.90, 176,065.31 and 84,469.42

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Solution

The fourth proportional to 127,565.90, 176,065.31 and 84,469.42 is: 116,583.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,565.90 : 176,065.31 = 84,469.42 : x
  2. Step 2: Convert to fraction form
    127,565.90/176,065.31 = 84,469.42/x
  3. Step 3: Cross multiply
    127,565.90x = 176,065.31 × 84,469.42
  4. Step 4: Simplify right side
    127,565.90x = 14,872,134,617.82
  5. Step 5: Solve for x
    x = 14,872,134,617.82/127,565.90
  6. Step 6: Final answer
    x = 116,583.94

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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.