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Finding the Fourth Proportional to 100,959.78, 151,434.20 and 30,833.62

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Solution

The fourth proportional to 100,959.78, 151,434.20 and 30,833.62 is: 46,248.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,959.78 : 151,434.20 = 30,833.62 : x
  2. Step 2: Convert to fraction form
    100,959.78/151,434.20 = 30,833.62/x
  3. Step 3: Cross multiply
    100,959.78x = 151,434.20 × 30,833.62
  4. Step 4: Simplify right side
    100,959.78x = 4,669,264,577.80
  5. Step 5: Solve for x
    x = 4,669,264,577.80/100,959.78
  6. Step 6: Final answer
    x = 46,248.76

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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.