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Finding the Fourth Proportional to 123,402.80, 185,104.20 and 61,065.20

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Solution

The fourth proportional to 123,402.80, 185,104.20 and 61,065.20 is: 91,597.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,402.80 : 185,104.20 = 61,065.20 : x
  2. Step 2: Convert to fraction form
    123,402.80/185,104.20 = 61,065.20/x
  3. Step 3: Cross multiply
    123,402.80x = 185,104.20 × 61,065.20
  4. Step 4: Simplify right side
    123,402.80x = 11,303,424,993.84
  5. Step 5: Solve for x
    x = 11,303,424,993.84/123,402.80
  6. Step 6: Final answer
    x = 91,597.80

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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.