Home / 154,531.78-213,229.50-90,011.64

Finding the Fourth Proportional to 154,531.78, 213,229.50 and 90,011.64

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Solution

The fourth proportional to 154,531.78, 213,229.50 and 90,011.64 is: 124,201.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,531.78 : 213,229.50 = 90,011.64 : x
  2. Step 2: Convert to fraction form
    154,531.78/213,229.50 = 90,011.64/x
  3. Step 3: Cross multiply
    154,531.78x = 213,229.50 × 90,011.64
  4. Step 4: Simplify right side
    154,531.78x = 19,193,136,991.38
  5. Step 5: Solve for x
    x = 19,193,136,991.38/154,531.78
  6. Step 6: Final answer
    x = 124,201.88

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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.