Home / 123,639.10-185,456.62-39,398.12

Finding the Fourth Proportional to 123,639.10, 185,456.62 and 39,398.12

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Solution

The fourth proportional to 123,639.10, 185,456.62 and 39,398.12 is: 59,096.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,639.10 : 185,456.62 = 39,398.12 : x
  2. Step 2: Convert to fraction form
    123,639.10/185,456.62 = 39,398.12/x
  3. Step 3: Cross multiply
    123,639.10x = 185,456.62 × 39,398.12
  4. Step 4: Simplify right side
    123,639.10x = 7,306,642,169.55
  5. Step 5: Solve for x
    x = 7,306,642,169.55/123,639.10
  6. Step 6: Final answer
    x = 59,096.53

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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.