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Finding the Fourth Proportional to 200,040.34, 300,060.87 and 81,711.70

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Solution

The fourth proportional to 200,040.34, 300,060.87 and 81,711.70 is: 122,567.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,040.34 : 300,060.87 = 81,711.70 : x
  2. Step 2: Convert to fraction form
    200,040.34/300,060.87 = 81,711.70/x
  3. Step 3: Cross multiply
    200,040.34x = 300,060.87 × 81,711.70
  4. Step 4: Simplify right side
    200,040.34x = 24,518,483,791.18
  5. Step 5: Solve for x
    x = 24,518,483,791.18/200,040.34
  6. Step 6: Final answer
    x = 122,567.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.