Home / 123,355.20-170,234.28-75,599.31

Finding the Fourth Proportional to 123,355.20, 170,234.28 and 75,599.31

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Solution

The fourth proportional to 123,355.20, 170,234.28 and 75,599.31 is: 104,329.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,355.20 : 170,234.28 = 75,599.31 : x
  2. Step 2: Convert to fraction form
    123,355.20/170,234.28 = 75,599.31/x
  3. Step 3: Cross multiply
    123,355.20x = 170,234.28 × 75,599.31
  4. Step 4: Simplify right side
    123,355.20x = 12,869,594,106.35
  5. Step 5: Solve for x
    x = 12,869,594,106.35/123,355.20
  6. Step 6: Final answer
    x = 104,329.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.