Home / 100,766.72-151,142.16-30,645.92

Finding the Fourth Proportional to 100,766.72, 151,142.16 and 30,645.92

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Solution

The fourth proportional to 100,766.72, 151,142.16 and 30,645.92 is: 45,966.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,766.72 : 151,142.16 = 30,645.92 : x
  2. Step 2: Convert to fraction form
    100,766.72/151,142.16 = 30,645.92/x
  3. Step 3: Cross multiply
    100,766.72x = 151,142.16 × 30,645.92
  4. Step 4: Simplify right side
    100,766.72x = 4,631,890,543.99
  5. Step 5: Solve for x
    x = 4,631,890,543.99/100,766.72
  6. Step 6: Final answer
    x = 45,966.47

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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.