Home / 142,248.20-196,301.04-78,581.84

Finding the Fourth Proportional to 142,248.20, 196,301.04 and 78,581.84

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Solution

The fourth proportional to 142,248.20, 196,301.04 and 78,581.84 is: 108,442.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,248.20 : 196,301.04 = 78,581.84 : x
  2. Step 2: Convert to fraction form
    142,248.20/196,301.04 = 78,581.84/x
  3. Step 3: Cross multiply
    142,248.20x = 196,301.04 × 78,581.84
  4. Step 4: Simplify right side
    142,248.20x = 15,425,696,917.11
  5. Step 5: Solve for x
    x = 15,425,696,917.11/142,248.20
  6. Step 6: Final answer
    x = 108,442.12

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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.