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Finding the Fourth Proportional to 203,987.97, 281,250.28 and 135,855.57

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Solution

The fourth proportional to 203,987.97, 281,250.28 and 135,855.57 is: 187,312.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,987.97 : 281,250.28 = 135,855.57 : x
  2. Step 2: Convert to fraction form
    203,987.97/281,250.28 = 135,855.57/x
  3. Step 3: Cross multiply
    203,987.97x = 281,250.28 × 135,855.57
  4. Step 4: Simplify right side
    203,987.97x = 38,209,417,102.06
  5. Step 5: Solve for x
    x = 38,209,417,102.06/203,987.97
  6. Step 6: Final answer
    x = 187,312.11

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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.