Home / 100,781.10-151,166.18-30,654.95

Finding the Fourth Proportional to 100,781.10, 151,166.18 and 30,654.95

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Solution

The fourth proportional to 100,781.10, 151,166.18 and 30,654.95 is: 45,980.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,781.10 : 151,166.18 = 30,654.95 : x
  2. Step 2: Convert to fraction form
    100,781.10/151,166.18 = 30,654.95/x
  3. Step 3: Cross multiply
    100,781.10x = 151,166.18 × 30,654.95
  4. Step 4: Simplify right side
    100,781.10x = 4,633,990,780.49
  5. Step 5: Solve for x
    x = 4,633,990,780.49/100,781.10
  6. Step 6: Final answer
    x = 45,980.75

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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.