Home / 142,082.97-196,060.53-78,416.66

Finding the Fourth Proportional to 142,082.97, 196,060.53 and 78,416.66

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Solution

The fourth proportional to 142,082.97, 196,060.53 and 78,416.66 is: 108,207.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,082.97 : 196,060.53 = 78,416.66 : x
  2. Step 2: Convert to fraction form
    142,082.97/196,060.53 = 78,416.66/x
  3. Step 3: Cross multiply
    142,082.97x = 196,060.53 × 78,416.66
  4. Step 4: Simplify right side
    142,082.97x = 15,374,412,704.64
  5. Step 5: Solve for x
    x = 15,374,412,704.64/142,082.97
  6. Step 6: Final answer
    x = 108,207.29

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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.