Home / 108,447.75-149,636.63-68,138.16

Finding the Fourth Proportional to 108,447.75, 149,636.63 and 68,138.16

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Solution

The fourth proportional to 108,447.75, 149,636.63 and 68,138.16 is: 94,017.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,447.75 : 149,636.63 = 68,138.16 : x
  2. Step 2: Convert to fraction form
    108,447.75/149,636.63 = 68,138.16/x
  3. Step 3: Cross multiply
    108,447.75x = 149,636.63 × 68,138.16
  4. Step 4: Simplify right side
    108,447.75x = 10,195,964,296.11
  5. Step 5: Solve for x
    x = 10,195,964,296.11/108,447.75
  6. Step 6: Final answer
    x = 94,017.30

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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.