Home / 123,610.20-185,415.30-83,693.40

Finding the Fourth Proportional to 123,610.20, 185,415.30 and 83,693.40

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Solution

The fourth proportional to 123,610.20, 185,415.30 and 83,693.40 is: 125,540.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,610.20 : 185,415.30 = 83,693.40 : x
  2. Step 2: Convert to fraction form
    123,610.20/185,415.30 = 83,693.40/x
  3. Step 3: Cross multiply
    123,610.20x = 185,415.30 × 83,693.40
  4. Step 4: Simplify right side
    123,610.20x = 15,518,036,869.02
  5. Step 5: Solve for x
    x = 15,518,036,869.02/123,610.20
  6. Step 6: Final answer
    x = 125,540.10

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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.