Home / 154,399.20-213,123.44-90,755.88

Finding the Fourth Proportional to 154,399.20, 213,123.44 and 90,755.88

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Solution

The fourth proportional to 154,399.20, 213,123.44 and 90,755.88 is: 125,274.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,399.20 : 213,123.44 = 90,755.88 : x
  2. Step 2: Convert to fraction form
    154,399.20/213,123.44 = 90,755.88/x
  3. Step 3: Cross multiply
    154,399.20x = 213,123.44 × 90,755.88
  4. Step 4: Simplify right side
    154,399.20x = 19,342,205,345.83
  5. Step 5: Solve for x
    x = 19,342,205,345.83/154,399.20
  6. Step 6: Final answer
    x = 125,274.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.