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Finding the Fourth Proportional to 127,984.84, 176,618.82 and 71,392.84

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Solution

The fourth proportional to 127,984.84, 176,618.82 and 71,392.84 is: 98,521.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,984.84 : 176,618.82 = 71,392.84 : x
  2. Step 2: Convert to fraction form
    127,984.84/176,618.82 = 71,392.84/x
  3. Step 3: Cross multiply
    127,984.84x = 176,618.82 × 71,392.84
  4. Step 4: Simplify right side
    127,984.84x = 12,609,319,157.25
  5. Step 5: Solve for x
    x = 12,609,319,157.25/127,984.84
  6. Step 6: Final answer
    x = 98,521.97

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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.