Home / 154,149.82-212,725.15-90,475.32

Finding the Fourth Proportional to 154,149.82, 212,725.15 and 90,475.32

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Solution

The fourth proportional to 154,149.82, 212,725.15 and 90,475.32 is: 124,854.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,149.82 : 212,725.15 = 90,475.32 : x
  2. Step 2: Convert to fraction form
    154,149.82/212,725.15 = 90,475.32/x
  3. Step 3: Cross multiply
    154,149.82x = 212,725.15 × 90,475.32
  4. Step 4: Simplify right side
    154,149.82x = 19,246,375,260.30
  5. Step 5: Solve for x
    x = 19,246,375,260.30/154,149.82
  6. Step 6: Final answer
    x = 124,854.99

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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.