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Finding the Fourth Proportional to 108,115, 149,180.90 and 60,360.68

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Solution

The fourth proportional to 108,115, 149,180.90 and 60,360.68 is: 83,287.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,115 : 149,180.90 = 60,360.68 : x
  2. Step 2: Convert to fraction form
    108,115/149,180.90 = 60,360.68/x
  3. Step 3: Cross multiply
    108,115x = 149,180.90 × 60,360.68
  4. Step 4: Simplify right side
    108,115x = 9,004,660,567.01
  5. Step 5: Solve for x
    x = 9,004,660,567.01/108,115
  6. Step 6: Final answer
    x = 83,287.80

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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.