Home / 123,620.20-185,430.30-30,126.76

Finding the Fourth Proportional to 123,620.20, 185,430.30 and 30,126.76

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Solution

The fourth proportional to 123,620.20, 185,430.30 and 30,126.76 is: 45,190.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,620.20 : 185,430.30 = 30,126.76 : x
  2. Step 2: Convert to fraction form
    123,620.20/185,430.30 = 30,126.76/x
  3. Step 3: Cross multiply
    123,620.20x = 185,430.30 × 30,126.76
  4. Step 4: Simplify right side
    123,620.20x = 5,586,414,144.83
  5. Step 5: Solve for x
    x = 5,586,414,144.83/123,620.20
  6. Step 6: Final answer
    x = 45,190.14

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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.