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Finding the Fourth Proportional to 123,745.40, 185,655.18 and 48,876.20

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Solution

The fourth proportional to 123,745.40, 185,655.18 and 48,876.20 is: 73,328.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,745.40 : 185,655.18 = 48,876.20 : x
  2. Step 2: Convert to fraction form
    123,745.40/185,655.18 = 48,876.20/x
  3. Step 3: Cross multiply
    123,745.40x = 185,655.18 × 48,876.20
  4. Step 4: Simplify right side
    123,745.40x = 9,074,119,708.72
  5. Step 5: Solve for x
    x = 9,074,119,708.72/123,745.40
  6. Step 6: Final answer
    x = 73,328.95

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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.