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Finding the Fourth Proportional to 127,046.88, 175,329.36 and 76,736.16

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Solution

The fourth proportional to 127,046.88, 175,329.36 and 76,736.16 is: 105,898.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,046.88 : 175,329.36 = 76,736.16 : x
  2. Step 2: Convert to fraction form
    127,046.88/175,329.36 = 76,736.16/x
  3. Step 3: Cross multiply
    127,046.88x = 175,329.36 × 76,736.16
  4. Step 4: Simplify right side
    127,046.88x = 13,454,101,821.66
  5. Step 5: Solve for x
    x = 13,454,101,821.66/127,046.88
  6. Step 6: Final answer
    x = 105,898.72

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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.