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Finding the Fourth Proportional to 203,633.71, 281,010.23 and 112,987.72

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Solution

The fourth proportional to 203,633.71, 281,010.23 and 112,987.72 is: 155,920.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,633.71 : 281,010.23 = 112,987.72 : x
  2. Step 2: Convert to fraction form
    203,633.71/281,010.23 = 112,987.72/x
  3. Step 3: Cross multiply
    203,633.71x = 281,010.23 × 112,987.72
  4. Step 4: Simplify right side
    203,633.71x = 31,750,704,764.32
  5. Step 5: Solve for x
    x = 31,750,704,764.32/203,633.71
  6. Step 6: Final answer
    x = 155,920.67

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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.