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Finding the Fourth Proportional to 127,892.90, 176,486.72 and 71,303.78

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Solution

The fourth proportional to 127,892.90, 176,486.72 and 71,303.78 is: 98,396.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,892.90 : 176,486.72 = 71,303.78 : x
  2. Step 2: Convert to fraction form
    127,892.90/176,486.72 = 71,303.78/x
  3. Step 3: Cross multiply
    127,892.90x = 176,486.72 × 71,303.78
  4. Step 4: Simplify right side
    127,892.90x = 12,584,170,255.80
  5. Step 5: Solve for x
    x = 12,584,170,255.80/127,892.90
  6. Step 6: Final answer
    x = 98,396.16

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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.