Home / 154,057.32-212,560.26-90,382.80

Finding the Fourth Proportional to 154,057.32, 212,560.26 and 90,382.80

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Solution

The fourth proportional to 154,057.32, 212,560.26 and 90,382.80 is: 124,705.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,057.32 : 212,560.26 = 90,382.80 : x
  2. Step 2: Convert to fraction form
    154,057.32/212,560.26 = 90,382.80/x
  3. Step 3: Cross multiply
    154,057.32x = 212,560.26 × 90,382.80
  4. Step 4: Simplify right side
    154,057.32x = 19,211,791,467.53
  5. Step 5: Solve for x
    x = 19,211,791,467.53/154,057.32
  6. Step 6: Final answer
    x = 124,705.48

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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.