Home / 100,748.20-151,722.16-87,757.48

Finding the Fourth Proportional to 100,748.20, 151,722.16 and 87,757.48

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Solution

The fourth proportional to 100,748.20, 151,722.16 and 87,757.48 is: 132,158.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,748.20 : 151,722.16 = 87,757.48 : x
  2. Step 2: Convert to fraction form
    100,748.20/151,722.16 = 87,757.48/x
  3. Step 3: Cross multiply
    100,748.20x = 151,722.16 × 87,757.48
  4. Step 4: Simplify right side
    100,748.20x = 13,314,754,421.76
  5. Step 5: Solve for x
    x = 13,314,754,421.76/100,748.20
  6. Step 6: Final answer
    x = 132,158.73

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.