Home / 123,680.02-185,520.48-30,185.78

Finding the Fourth Proportional to 123,680.02, 185,520.48 and 30,185.78

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Solution

The fourth proportional to 123,680.02, 185,520.48 and 30,185.78 is: 45,278.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,680.02 : 185,520.48 = 30,185.78 : x
  2. Step 2: Convert to fraction form
    123,680.02/185,520.48 = 30,185.78/x
  3. Step 3: Cross multiply
    123,680.02x = 185,520.48 × 30,185.78
  4. Step 4: Simplify right side
    123,680.02x = 5,600,080,394.77
  5. Step 5: Solve for x
    x = 5,600,080,394.77/123,680.02
  6. Step 6: Final answer
    x = 45,278.78

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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.