Home / 113,821.80-170,732.70-72,452.20

Finding the Fourth Proportional to 113,821.80, 170,732.70 and 72,452.20

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Solution

The fourth proportional to 113,821.80, 170,732.70 and 72,452.20 is: 108,678.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,821.80 : 170,732.70 = 72,452.20 : x
  2. Step 2: Convert to fraction form
    113,821.80/170,732.70 = 72,452.20/x
  3. Step 3: Cross multiply
    113,821.80x = 170,732.70 × 72,452.20
  4. Step 4: Simplify right side
    113,821.80x = 12,369,959,726.94
  5. Step 5: Solve for x
    x = 12,369,959,726.94/113,821.80
  6. Step 6: Final answer
    x = 108,678.30

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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.