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Finding the Fourth Proportional to 123,744.30, 185,616.45 and 40,638.30

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Solution

The fourth proportional to 123,744.30, 185,616.45 and 40,638.30 is: 60,957.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,744.30 : 185,616.45 = 40,638.30 : x
  2. Step 2: Convert to fraction form
    123,744.30/185,616.45 = 40,638.30/x
  3. Step 3: Cross multiply
    123,744.30x = 185,616.45 × 40,638.30
  4. Step 4: Simplify right side
    123,744.30x = 7,543,136,980.04
  5. Step 5: Solve for x
    x = 7,543,136,980.04/123,744.30
  6. Step 6: Final answer
    x = 60,957.45

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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.