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Finding the Fourth Proportional to 108,086, 149,155.80 and 60,338

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Solution

The fourth proportional to 108,086, 149,155.80 and 60,338 is: 83,264.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,086 : 149,155.80 = 60,338 : x
  2. Step 2: Convert to fraction form
    108,086/149,155.80 = 60,338/x
  3. Step 3: Cross multiply
    108,086x = 149,155.80 × 60,338
  4. Step 4: Simplify right side
    108,086x = 8,999,762,660.40
  5. Step 5: Solve for x
    x = 8,999,762,660.40/108,086
  6. Step 6: Final answer
    x = 83,264.83

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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.