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Finding the Fourth Proportional to 168,998.40, 253,401.62 and 69,041.57

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Solution

The fourth proportional to 168,998.40, 253,401.62 and 69,041.57 is: 103,523.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,998.40 : 253,401.62 = 69,041.57 : x
  2. Step 2: Convert to fraction form
    168,998.40/253,401.62 = 69,041.57/x
  3. Step 3: Cross multiply
    168,998.40x = 253,401.62 × 69,041.57
  4. Step 4: Simplify right side
    168,998.40x = 17,495,244,073.13
  5. Step 5: Solve for x
    x = 17,495,244,073.13/168,998.40
  6. Step 6: Final answer
    x = 103,523.13

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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.