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Finding the Fourth Proportional to 107,990.63, 149,031.13 and 60,253.21

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Solution

The fourth proportional to 107,990.63, 149,031.13 and 60,253.21 is: 83,151.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,990.63 : 149,031.13 = 60,253.21 : x
  2. Step 2: Convert to fraction form
    107,990.63/149,031.13 = 60,253.21/x
  3. Step 3: Cross multiply
    107,990.63x = 149,031.13 × 60,253.21
  4. Step 4: Simplify right side
    107,990.63x = 8,979,603,972.43
  5. Step 5: Solve for x
    x = 8,979,603,972.43/107,990.63
  6. Step 6: Final answer
    x = 83,151.70

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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.