Home / 100,899.57-139,245.09-62,680.22

Finding the Fourth Proportional to 100,899.57, 139,245.09 and 62,680.22

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Solution

The fourth proportional to 100,899.57, 139,245.09 and 62,680.22 is: 86,500.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,899.57 : 139,245.09 = 62,680.22 : x
  2. Step 2: Convert to fraction form
    100,899.57/139,245.09 = 62,680.22/x
  3. Step 3: Cross multiply
    100,899.57x = 139,245.09 × 62,680.22
  4. Step 4: Simplify right side
    100,899.57x = 8,727,912,178.89
  5. Step 5: Solve for x
    x = 8,727,912,178.89/100,899.57
  6. Step 6: Final answer
    x = 86,500.98

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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.