Home / 142,207.91-196,248.11-78,546.77

Finding the Fourth Proportional to 142,207.91, 196,248.11 and 78,546.77

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Solution

The fourth proportional to 142,207.91, 196,248.11 and 78,546.77 is: 108,395.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,207.91 : 196,248.11 = 78,546.77 : x
  2. Step 2: Convert to fraction form
    142,207.91/196,248.11 = 78,546.77/x
  3. Step 3: Cross multiply
    142,207.91x = 196,248.11 × 78,546.77
  4. Step 4: Simplify right side
    142,207.91x = 15,414,655,159.10
  5. Step 5: Solve for x
    x = 15,414,655,159.10/142,207.91
  6. Step 6: Final answer
    x = 108,395.20

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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.