Home / 100,421.84-150,633.92-30,301.76

Finding the Fourth Proportional to 100,421.84, 150,633.92 and 30,301.76

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Solution

The fourth proportional to 100,421.84, 150,633.92 and 30,301.76 is: 45,452.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,421.84 : 150,633.92 = 30,301.76 : x
  2. Step 2: Convert to fraction form
    100,421.84/150,633.92 = 30,301.76/x
  3. Step 3: Cross multiply
    100,421.84x = 150,633.92 × 30,301.76
  4. Step 4: Simplify right side
    100,421.84x = 4,564,472,891.70
  5. Step 5: Solve for x
    x = 4,564,472,891.70/100,421.84
  6. Step 6: Final answer
    x = 45,452.99

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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.