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Finding the Fourth Proportional to 203,615.46, 281,004.76 and 112,988.58

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Solution

The fourth proportional to 203,615.46, 281,004.76 and 112,988.58 is: 155,932.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,615.46 : 281,004.76 = 112,988.58 : x
  2. Step 2: Convert to fraction form
    203,615.46/281,004.76 = 112,988.58/x
  3. Step 3: Cross multiply
    203,615.46x = 281,004.76 × 112,988.58
  4. Step 4: Simplify right side
    203,615.46x = 31,750,328,805.64
  5. Step 5: Solve for x
    x = 31,750,328,805.64/203,615.46
  6. Step 6: Final answer
    x = 155,932.80

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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.