Home / 75,306.20-112,959.30-19,146.20

Finding the Fourth Proportional to 75,306.20, 112,959.30 and 19,146.20

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Solution

The fourth proportional to 75,306.20, 112,959.30 and 19,146.20 is: 28,719.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,306.20 : 112,959.30 = 19,146.20 : x
  2. Step 2: Convert to fraction form
    75,306.20/112,959.30 = 19,146.20/x
  3. Step 3: Cross multiply
    75,306.20x = 112,959.30 × 19,146.20
  4. Step 4: Simplify right side
    75,306.20x = 2,162,741,349.66
  5. Step 5: Solve for x
    x = 2,162,741,349.66/75,306.20
  6. Step 6: Final answer
    x = 28,719.30

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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.