Home / 90,731.36-125,176.10-54,908.30

Finding the Fourth Proportional to 90,731.36, 125,176.10 and 54,908.30

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Solution

The fourth proportional to 90,731.36, 125,176.10 and 54,908.30 is: 75,753.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,731.36 : 125,176.10 = 54,908.30 : x
  2. Step 2: Convert to fraction form
    90,731.36/125,176.10 = 54,908.30/x
  3. Step 3: Cross multiply
    90,731.36x = 125,176.10 × 54,908.30
  4. Step 4: Simplify right side
    90,731.36x = 6,873,206,851.63
  5. Step 5: Solve for x
    x = 6,873,206,851.63/90,731.36
  6. Step 6: Final answer
    x = 75,753.38

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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.