Home / 123,385.20-185,164.20-53,314.80

Finding the Fourth Proportional to 123,385.20, 185,164.20 and 53,314.80

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Solution

The fourth proportional to 123,385.20, 185,164.20 and 53,314.80 is: 80,009.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,385.20 : 185,164.20 = 53,314.80 : x
  2. Step 2: Convert to fraction form
    123,385.20/185,164.20 = 53,314.80/x
  3. Step 3: Cross multiply
    123,385.20x = 185,164.20 × 53,314.80
  4. Step 4: Simplify right side
    123,385.20x = 9,871,992,290.16
  5. Step 5: Solve for x
    x = 9,871,992,290.16/123,385.20
  6. Step 6: Final answer
    x = 80,009.53

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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.