Home / 123,621.20-185,431.80-30,127.76

Finding the Fourth Proportional to 123,621.20, 185,431.80 and 30,127.76

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Solution

The fourth proportional to 123,621.20, 185,431.80 and 30,127.76 is: 45,191.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,621.20 : 185,431.80 = 30,127.76 : x
  2. Step 2: Convert to fraction form
    123,621.20/185,431.80 = 30,127.76/x
  3. Step 3: Cross multiply
    123,621.20x = 185,431.80 × 30,127.76
  4. Step 4: Simplify right side
    123,621.20x = 5,586,644,766.77
  5. Step 5: Solve for x
    x = 5,586,644,766.77/123,621.20
  6. Step 6: Final answer
    x = 45,191.64

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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.