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Finding the Fourth Proportional to 108,974.36, 150,451.70 and 86,404.52

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Solution

The fourth proportional to 108,974.36, 150,451.70 and 86,404.52 is: 119,291.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,974.36 : 150,451.70 = 86,404.52 : x
  2. Step 2: Convert to fraction form
    108,974.36/150,451.70 = 86,404.52/x
  3. Step 3: Cross multiply
    108,974.36x = 150,451.70 × 86,404.52
  4. Step 4: Simplify right side
    108,974.36x = 12,999,706,169.43
  5. Step 5: Solve for x
    x = 12,999,706,169.43/108,974.36
  6. Step 6: Final answer
    x = 119,291.43

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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.