Home / 100,815.91-151,122.21-63,402.72

Finding the Fourth Proportional to 100,815.91, 151,122.21 and 63,402.72

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Solution

The fourth proportional to 100,815.91, 151,122.21 and 63,402.72 is: 95,040.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,815.91 : 151,122.21 = 63,402.72 : x
  2. Step 2: Convert to fraction form
    100,815.91/151,122.21 = 63,402.72/x
  3. Step 3: Cross multiply
    100,815.91x = 151,122.21 × 63,402.72
  4. Step 4: Simplify right side
    100,815.91x = 9,581,559,166.41
  5. Step 5: Solve for x
    x = 9,581,559,166.41/100,815.91
  6. Step 6: Final answer
    x = 95,040.15

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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.