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Finding the Fourth Proportional to 203,700.49, 281,218.03 and 139,266.61

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Solution

The fourth proportional to 203,700.49, 281,218.03 and 139,266.61 is: 192,264.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,700.49 : 281,218.03 = 139,266.61 : x
  2. Step 2: Convert to fraction form
    203,700.49/281,218.03 = 139,266.61/x
  3. Step 3: Cross multiply
    203,700.49x = 281,218.03 × 139,266.61
  4. Step 4: Simplify right side
    203,700.49x = 39,164,280,657.77
  5. Step 5: Solve for x
    x = 39,164,280,657.77/203,700.49
  6. Step 6: Final answer
    x = 192,264.05

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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.