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Finding the Fourth Proportional to 100,888.15, 139,158.97 and 63,096.79

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Solution

The fourth proportional to 100,888.15, 139,158.97 and 63,096.79 is: 87,031.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,888.15 : 139,158.97 = 63,096.79 : x
  2. Step 2: Convert to fraction form
    100,888.15/139,158.97 = 63,096.79/x
  3. Step 3: Cross multiply
    100,888.15x = 139,158.97 × 63,096.79
  4. Step 4: Simplify right side
    100,888.15x = 8,780,484,306.71
  5. Step 5: Solve for x
    x = 8,780,484,306.71/100,888.15
  6. Step 6: Final answer
    x = 87,031.87

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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.