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Finding the Fourth Proportional to 203,988.77, 281,423.86 and 117,931.92

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Solution

The fourth proportional to 203,988.77, 281,423.86 and 117,931.92 is: 162,699.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,988.77 : 281,423.86 = 117,931.92 : x
  2. Step 2: Convert to fraction form
    203,988.77/281,423.86 = 117,931.92/x
  3. Step 3: Cross multiply
    203,988.77x = 281,423.86 × 117,931.92
  4. Step 4: Simplify right side
    203,988.77x = 33,188,856,143.61
  5. Step 5: Solve for x
    x = 33,188,856,143.61/203,988.77
  6. Step 6: Final answer
    x = 162,699.43

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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.