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Finding the Fourth Proportional to 127,967.48, 176,537.88 and 74,221.28

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Solution

The fourth proportional to 127,967.48, 176,537.88 and 74,221.28 is: 102,392.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,967.48 : 176,537.88 = 74,221.28 : x
  2. Step 2: Convert to fraction form
    127,967.48/176,537.88 = 74,221.28/x
  3. Step 3: Cross multiply
    127,967.48x = 176,537.88 × 74,221.28
  4. Step 4: Simplify right side
    127,967.48x = 13,102,867,422.09
  5. Step 5: Solve for x
    x = 13,102,867,422.09/127,967.48
  6. Step 6: Final answer
    x = 102,392.17

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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.