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Finding the Fourth Proportional to 188,895.70, 282,687.45 and 129,846.70

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Solution

The fourth proportional to 188,895.70, 282,687.45 and 129,846.70 is: 194,319.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,895.70 : 282,687.45 = 129,846.70 : x
  2. Step 2: Convert to fraction form
    188,895.70/282,687.45 = 129,846.70/x
  3. Step 3: Cross multiply
    188,895.70x = 282,687.45 × 129,846.70
  4. Step 4: Simplify right side
    188,895.70x = 36,706,032,513.92
  5. Step 5: Solve for x
    x = 36,706,032,513.92/188,895.70
  6. Step 6: Final answer
    x = 194,319.05

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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.