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Finding the Fourth Proportional to 127,720.89, 176,262.89 and 71,132.13

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Solution

The fourth proportional to 127,720.89, 176,262.89 and 71,132.13 is: 98,166.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,720.89 : 176,262.89 = 71,132.13 : x
  2. Step 2: Convert to fraction form
    127,720.89/176,262.89 = 71,132.13/x
  3. Step 3: Cross multiply
    127,720.89x = 176,262.89 × 71,132.13
  4. Step 4: Simplify right side
    127,720.89x = 12,537,954,450.00
  5. Step 5: Solve for x
    x = 12,537,954,450.00/127,720.89
  6. Step 6: Final answer
    x = 98,166.83

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1.5x scale

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.