Home / 142,488.59-196,617.20-78,817.73

Finding the Fourth Proportional to 142,488.59, 196,617.20 and 78,817.73

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Solution

The fourth proportional to 142,488.59, 196,617.20 and 78,817.73 is: 108,759.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,488.59 : 196,617.20 = 78,817.73 : x
  2. Step 2: Convert to fraction form
    142,488.59/196,617.20 = 78,817.73/x
  3. Step 3: Cross multiply
    142,488.59x = 196,617.20 × 78,817.73
  4. Step 4: Simplify right side
    142,488.59x = 15,496,920,005.78
  5. Step 5: Solve for x
    x = 15,496,920,005.78/142,488.59
  6. Step 6: Final answer
    x = 108,759.03

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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.