Home / 154,105.20-212,680.49-90,441.63

Finding the Fourth Proportional to 154,105.20, 212,680.49 and 90,441.63

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Solution

The fourth proportional to 154,105.20, 212,680.49 and 90,441.63 is: 124,818.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,105.20 : 212,680.49 = 90,441.63 : x
  2. Step 2: Convert to fraction form
    154,105.20/212,680.49 = 90,441.63/x
  3. Step 3: Cross multiply
    154,105.20x = 212,680.49 × 90,441.63
  4. Step 4: Simplify right side
    154,105.20x = 19,235,169,732.59
  5. Step 5: Solve for x
    x = 19,235,169,732.59/154,105.20
  6. Step 6: Final answer
    x = 124,818.43

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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.