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Finding the Fourth Proportional to 121,502.40, 182,034.90 and 104,006.40

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Solution

The fourth proportional to 121,502.40, 182,034.90 and 104,006.40 is: 155,822.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,502.40 : 182,034.90 = 104,006.40 : x
  2. Step 2: Convert to fraction form
    121,502.40/182,034.90 = 104,006.40/x
  3. Step 3: Cross multiply
    121,502.40x = 182,034.90 × 104,006.40
  4. Step 4: Simplify right side
    121,502.40x = 18,932,794,623.36
  5. Step 5: Solve for x
    x = 18,932,794,623.36/121,502.40
  6. Step 6: Final answer
    x = 155,822.39

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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.