Home / 105,764.20-158,732.70-102,308.20

Finding the Fourth Proportional to 105,764.20, 158,732.70 and 102,308.20

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Solution

The fourth proportional to 105,764.20, 158,732.70 and 102,308.20 is: 153,545.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,764.20 : 158,732.70 = 102,308.20 : x
  2. Step 2: Convert to fraction form
    105,764.20/158,732.70 = 102,308.20/x
  3. Step 3: Cross multiply
    105,764.20x = 158,732.70 × 102,308.20
  4. Step 4: Simplify right side
    105,764.20x = 16,239,656,818.14
  5. Step 5: Solve for x
    x = 16,239,656,818.14/105,764.20
  6. Step 6: Final answer
    x = 153,545.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.