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Finding the Fourth Proportional to 113,841, 157,102.20 and 63,540

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Solution

The fourth proportional to 113,841, 157,102.20 and 63,540 is: 87,686.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,841 : 157,102.20 = 63,540 : x
  2. Step 2: Convert to fraction form
    113,841/157,102.20 = 63,540/x
  3. Step 3: Cross multiply
    113,841x = 157,102.20 × 63,540
  4. Step 4: Simplify right side
    113,841x = 9,982,273,788
  5. Step 5: Solve for x
    x = 9,982,273,788/113,841
  6. Step 6: Final answer
    x = 87,686.10

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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.