Home / 121,521.20-182,281.80-38,415.20

Finding the Fourth Proportional to 121,521.20, 182,281.80 and 38,415.20

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Solution

The fourth proportional to 121,521.20, 182,281.80 and 38,415.20 is: 57,622.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,521.20 : 182,281.80 = 38,415.20 : x
  2. Step 2: Convert to fraction form
    121,521.20/182,281.80 = 38,415.20/x
  3. Step 3: Cross multiply
    121,521.20x = 182,281.80 × 38,415.20
  4. Step 4: Simplify right side
    121,521.20x = 7,002,390,891.95
  5. Step 5: Solve for x
    x = 7,002,390,891.95/121,521.20
  6. Step 6: Final answer
    x = 57,622.79

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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.