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Finding the Fourth Proportional to 118,121.43, 176,984.90 and 82,998.21

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Solution

The fourth proportional to 118,121.43, 176,984.90 and 82,998.21 is: 124,358.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,121.43 : 176,984.90 = 82,998.21 : x
  2. Step 2: Convert to fraction form
    118,121.43/176,984.90 = 82,998.21/x
  3. Step 3: Cross multiply
    118,121.43x = 176,984.90 × 82,998.21
  4. Step 4: Simplify right side
    118,121.43x = 14,689,429,897.03
  5. Step 5: Solve for x
    x = 14,689,429,897.03/118,121.43
  6. Step 6: Final answer
    x = 124,358.72

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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.