Home / 100,189.12-150,306.72-30,069.76

Finding the Fourth Proportional to 100,189.12, 150,306.72 and 30,069.76

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Solution

The fourth proportional to 100,189.12, 150,306.72 and 30,069.76 is: 45,111.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,189.12 : 150,306.72 = 30,069.76 : x
  2. Step 2: Convert to fraction form
    100,189.12/150,306.72 = 30,069.76/x
  3. Step 3: Cross multiply
    100,189.12x = 150,306.72 × 30,069.76
  4. Step 4: Simplify right side
    100,189.12x = 4,519,686,996.79
  5. Step 5: Solve for x
    x = 4,519,686,996.79/100,189.12
  6. Step 6: Final answer
    x = 45,111.55

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1.5x scale

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.