Home / 154,400.20-213,124.82-90,756.88

Finding the Fourth Proportional to 154,400.20, 213,124.82 and 90,756.88

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Solution

The fourth proportional to 154,400.20, 213,124.82 and 90,756.88 is: 125,275.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,400.20 : 213,124.82 = 90,756.88 : x
  2. Step 2: Convert to fraction form
    154,400.20/213,124.82 = 90,756.88/x
  3. Step 3: Cross multiply
    154,400.20x = 213,124.82 × 90,756.88
  4. Step 4: Simplify right side
    154,400.20x = 19,342,543,713.76
  5. Step 5: Solve for x
    x = 19,342,543,713.76/154,400.20
  6. Step 6: Final answer
    x = 125,275.38

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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.