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Finding the Fourth Proportional to 108,378.29, 149,571 and 60,636.08

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Solution

The fourth proportional to 108,378.29, 149,571 and 60,636.08 is: 83,682.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,378.29 : 149,571 = 60,636.08 : x
  2. Step 2: Convert to fraction form
    108,378.29/149,571 = 60,636.08/x
  3. Step 3: Cross multiply
    108,378.29x = 149,571 × 60,636.08
  4. Step 4: Simplify right side
    108,378.29x = 9,069,398,373.83
  5. Step 5: Solve for x
    x = 9,069,398,373.83/108,378.29
  6. Step 6: Final answer
    x = 83,682.80

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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.