Home / 108,981.26-163,213.55-69,418.43

Finding the Fourth Proportional to 108,981.26, 163,213.55 and 69,418.43

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Solution

The fourth proportional to 108,981.26, 163,213.55 and 69,418.43 is: 103,963.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,981.26 : 163,213.55 = 69,418.43 : x
  2. Step 2: Convert to fraction form
    108,981.26/163,213.55 = 69,418.43/x
  3. Step 3: Cross multiply
    108,981.26x = 163,213.55 × 69,418.43
  4. Step 4: Simplify right side
    108,981.26x = 11,330,027,232.57
  5. Step 5: Solve for x
    x = 11,330,027,232.57/108,981.26
  6. Step 6: Final answer
    x = 103,963.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.