Home / 154,149.62-212,753.54-89,638.80

Finding the Fourth Proportional to 154,149.62, 212,753.54 and 89,638.80

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Solution

The fourth proportional to 154,149.62, 212,753.54 and 89,638.80 is: 123,717.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,149.62 : 212,753.54 = 89,638.80 : x
  2. Step 2: Convert to fraction form
    154,149.62/212,753.54 = 89,638.80/x
  3. Step 3: Cross multiply
    154,149.62x = 212,753.54 × 89,638.80
  4. Step 4: Simplify right side
    154,149.62x = 19,070,972,021.35
  5. Step 5: Solve for x
    x = 19,070,972,021.35/154,149.62
  6. Step 6: Final answer
    x = 123,717.28

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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.