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Finding the Fourth Proportional to 123,184.80, 169,963.44 and 75,420.72

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Solution

The fourth proportional to 123,184.80, 169,963.44 and 75,420.72 is: 104,061.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,184.80 : 169,963.44 = 75,420.72 : x
  2. Step 2: Convert to fraction form
    123,184.80/169,963.44 = 75,420.72/x
  3. Step 3: Cross multiply
    123,184.80x = 169,963.44 × 75,420.72
  4. Step 4: Simplify right side
    123,184.80x = 12,818,765,018.48
  5. Step 5: Solve for x
    x = 12,818,765,018.48/123,184.80
  6. Step 6: Final answer
    x = 104,061.26

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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.