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Finding the Fourth Proportional to 100,610.34, 138,834.12 and 58,171.62

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Solution

The fourth proportional to 100,610.34, 138,834.12 and 58,171.62 is: 80,272.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,610.34 : 138,834.12 = 58,171.62 : x
  2. Step 2: Convert to fraction form
    100,610.34/138,834.12 = 58,171.62/x
  3. Step 3: Cross multiply
    100,610.34x = 138,834.12 × 58,171.62
  4. Step 4: Simplify right side
    100,610.34x = 8,076,205,671.67
  5. Step 5: Solve for x
    x = 8,076,205,671.67/100,610.34
  6. Step 6: Final answer
    x = 80,272.12

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1.5x scale

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.