Home / 113,031.28-169,511.64-39,142

Finding the Fourth Proportional to 113,031.28, 169,511.64 and 39,142

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Solution

The fourth proportional to 113,031.28, 169,511.64 and 39,142 is: 58,700.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,031.28 : 169,511.64 = 39,142 : x
  2. Step 2: Convert to fraction form
    113,031.28/169,511.64 = 39,142/x
  3. Step 3: Cross multiply
    113,031.28x = 169,511.64 × 39,142
  4. Step 4: Simplify right side
    113,031.28x = 6,635,024,612.88
  5. Step 5: Solve for x
    x = 6,635,024,612.88/113,031.28
  6. Step 6: Final answer
    x = 58,700.78

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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.