Home / 154,518.72-213,220.48-90,872.16

Finding the Fourth Proportional to 154,518.72, 213,220.48 and 90,872.16

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Solution

The fourth proportional to 154,518.72, 213,220.48 and 90,872.16 is: 125,394.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,518.72 : 213,220.48 = 90,872.16 : x
  2. Step 2: Convert to fraction form
    154,518.72/213,220.48 = 90,872.16/x
  3. Step 3: Cross multiply
    154,518.72x = 213,220.48 × 90,872.16
  4. Step 4: Simplify right side
    154,518.72x = 19,375,805,573.84
  5. Step 5: Solve for x
    x = 19,375,805,573.84/154,518.72
  6. Step 6: Final answer
    x = 125,394.55

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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.