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Finding the Fourth Proportional to 132,751.13, 199,126.70 and 77,308.25

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Solution

The fourth proportional to 132,751.13, 199,126.70 and 77,308.25 is: 115,962.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,751.13 : 199,126.70 = 77,308.25 : x
  2. Step 2: Convert to fraction form
    132,751.13/199,126.70 = 77,308.25/x
  3. Step 3: Cross multiply
    132,751.13x = 199,126.70 × 77,308.25
  4. Step 4: Simplify right side
    132,751.13x = 15,394,136,705.28
  5. Step 5: Solve for x
    x = 15,394,136,705.28/132,751.13
  6. Step 6: Final answer
    x = 115,962.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.