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Finding the Fourth Proportional to 108,434.30, 149,639.10 and 60,696.86

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Solution

The fourth proportional to 108,434.30, 149,639.10 and 60,696.86 is: 83,761.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,434.30 : 149,639.10 = 60,696.86 : x
  2. Step 2: Convert to fraction form
    108,434.30/149,639.10 = 60,696.86/x
  3. Step 3: Cross multiply
    108,434.30x = 149,639.10 × 60,696.86
  4. Step 4: Simplify right side
    108,434.30x = 9,082,623,503.23
  5. Step 5: Solve for x
    x = 9,082,623,503.23/108,434.30
  6. Step 6: Final answer
    x = 83,761.54

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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.