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Finding the Fourth Proportional to 210,100.49, 315,169.97 and 83,710.11

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Solution

The fourth proportional to 210,100.49, 315,169.97 and 83,710.11 is: 125,572.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,100.49 : 315,169.97 = 83,710.11 : x
  2. Step 2: Convert to fraction form
    210,100.49/315,169.97 = 83,710.11/x
  3. Step 3: Cross multiply
    210,100.49x = 315,169.97 × 83,710.11
  4. Step 4: Simplify right side
    210,100.49x = 26,382,912,438.85
  5. Step 5: Solve for x
    x = 26,382,912,438.85/210,100.49
  6. Step 6: Final answer
    x = 125,572.83

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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.