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Finding the Fourth Proportional to 169,639.80, 254,556.90 and 64,534.20

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Solution

The fourth proportional to 169,639.80, 254,556.90 and 64,534.20 is: 96,838.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,639.80 : 254,556.90 = 64,534.20 : x
  2. Step 2: Convert to fraction form
    169,639.80/254,556.90 = 64,534.20/x
  3. Step 3: Cross multiply
    169,639.80x = 254,556.90 × 64,534.20
  4. Step 4: Simplify right side
    169,639.80x = 16,427,625,895.98
  5. Step 5: Solve for x
    x = 16,427,625,895.98/169,639.80
  6. Step 6: Final answer
    x = 96,838.28

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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.