Home / 113,387.20-170,253.60-66,731.20

Finding the Fourth Proportional to 113,387.20, 170,253.60 and 66,731.20

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Solution

The fourth proportional to 113,387.20, 170,253.60 and 66,731.20 is: 100,198.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,387.20 : 170,253.60 = 66,731.20 : x
  2. Step 2: Convert to fraction form
    113,387.20/170,253.60 = 66,731.20/x
  3. Step 3: Cross multiply
    113,387.20x = 170,253.60 × 66,731.20
  4. Step 4: Simplify right side
    113,387.20x = 11,361,227,032.32
  5. Step 5: Solve for x
    x = 11,361,227,032.32/113,387.20
  6. Step 6: Final answer
    x = 100,198.50

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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.