Home / 142,654.92-196,864.74-78,996.84

Finding the Fourth Proportional to 142,654.92, 196,864.74 and 78,996.84

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Solution

The fourth proportional to 142,654.92, 196,864.74 and 78,996.84 is: 109,016.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,654.92 : 196,864.74 = 78,996.84 : x
  2. Step 2: Convert to fraction form
    142,654.92/196,864.74 = 78,996.84/x
  3. Step 3: Cross multiply
    142,654.92x = 196,864.74 × 78,996.84
  4. Step 4: Simplify right side
    142,654.92x = 15,551,692,367.42
  5. Step 5: Solve for x
    x = 15,551,692,367.42/142,654.92
  6. Step 6: Final answer
    x = 109,016.17

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1.5x scale

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.