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Finding the Fourth Proportional to 127,042.74, 175,317.79 and 69,680.90

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Solution

The fourth proportional to 127,042.74, 175,317.79 and 69,680.90 is: 96,158.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,042.74 : 175,317.79 = 69,680.90 : x
  2. Step 2: Convert to fraction form
    127,042.74/175,317.79 = 69,680.90/x
  3. Step 3: Cross multiply
    127,042.74x = 175,317.79 × 69,680.90
  4. Step 4: Simplify right side
    127,042.74x = 12,216,300,342.42
  5. Step 5: Solve for x
    x = 12,216,300,342.42/127,042.74
  6. Step 6: Final answer
    x = 96,158.98

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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.