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Finding the Fourth Proportional to 169,678.80, 234,049.12 and 104,239

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Solution

The fourth proportional to 169,678.80, 234,049.12 and 104,239 is: 143,783.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,678.80 : 234,049.12 = 104,239 : x
  2. Step 2: Convert to fraction form
    169,678.80/234,049.12 = 104,239/x
  3. Step 3: Cross multiply
    169,678.80x = 234,049.12 × 104,239
  4. Step 4: Simplify right side
    169,678.80x = 24,397,046,219.68
  5. Step 5: Solve for x
    x = 24,397,046,219.68/169,678.80
  6. Step 6: Final answer
    x = 143,783.70

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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.