Home / 154,003.80-212,522.97-86,021.72

Finding the Fourth Proportional to 154,003.80, 212,522.97 and 86,021.72

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Solution

The fourth proportional to 154,003.80, 212,522.97 and 86,021.72 is: 118,708.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,003.80 : 212,522.97 = 86,021.72 : x
  2. Step 2: Convert to fraction form
    154,003.80/212,522.97 = 86,021.72/x
  3. Step 3: Cross multiply
    154,003.80x = 212,522.97 × 86,021.72
  4. Step 4: Simplify right side
    154,003.80x = 18,281,591,418.91
  5. Step 5: Solve for x
    x = 18,281,591,418.91/154,003.80
  6. Step 6: Final answer
    x = 118,708.70

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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.