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Finding the Fourth Proportional to 127,657.50, 176,167.44 and 71,079.90

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Solution

The fourth proportional to 127,657.50, 176,167.44 and 71,079.90 is: 98,090.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,657.50 : 176,167.44 = 71,079.90 : x
  2. Step 2: Convert to fraction form
    127,657.50/176,167.44 = 71,079.90/x
  3. Step 3: Cross multiply
    127,657.50x = 176,167.44 × 71,079.90
  4. Step 4: Simplify right side
    127,657.50x = 12,521,964,018.46
  5. Step 5: Solve for x
    x = 12,521,964,018.46/127,657.50
  6. Step 6: Final answer
    x = 98,090.31

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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.