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Finding the Fourth Proportional to 108,391.91, 149,588.17 and 60,649.70

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Solution

The fourth proportional to 108,391.91, 149,588.17 and 60,649.70 is: 83,700.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,391.91 : 149,588.17 = 60,649.70 : x
  2. Step 2: Convert to fraction form
    108,391.91/149,588.17 = 60,649.70/x
  3. Step 3: Cross multiply
    108,391.91x = 149,588.17 × 60,649.70
  4. Step 4: Simplify right side
    108,391.91x = 9,072,476,734.48
  5. Step 5: Solve for x
    x = 9,072,476,734.48/108,391.91
  6. Step 6: Final answer
    x = 83,700.69

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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.