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Finding the Fourth Proportional to 123,625.80, 185,240.70 and 120,345.48

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Solution

The fourth proportional to 123,625.80, 185,240.70 and 120,345.48 is: 180,325.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,625.80 : 185,240.70 = 120,345.48 : x
  2. Step 2: Convert to fraction form
    123,625.80/185,240.70 = 120,345.48/x
  3. Step 3: Cross multiply
    123,625.80x = 185,240.70 × 120,345.48
  4. Step 4: Simplify right side
    123,625.80x = 22,292,880,957.04
  5. Step 5: Solve for x
    x = 22,292,880,957.04/123,625.80
  6. Step 6: Final answer
    x = 180,325.47

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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.