Home / 154,231.20-212,792.40-90,532.80

Finding the Fourth Proportional to 154,231.20, 212,792.40 and 90,532.80

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Solution

The fourth proportional to 154,231.20, 212,792.40 and 90,532.80 is: 124,907.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,231.20 : 212,792.40 = 90,532.80 : x
  2. Step 2: Convert to fraction form
    154,231.20/212,792.40 = 90,532.80/x
  3. Step 3: Cross multiply
    154,231.20x = 212,792.40 × 90,532.80
  4. Step 4: Simplify right side
    154,231.20x = 19,264,691,790.72
  5. Step 5: Solve for x
    x = 19,264,691,790.72/154,231.20
  6. Step 6: Final answer
    x = 124,907.88

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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.