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Finding the Fourth Proportional to 169,521.52, 254,283.56 and 78,328.48

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Solution

The fourth proportional to 169,521.52, 254,283.56 and 78,328.48 is: 117,493.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,521.52 : 254,283.56 = 78,328.48 : x
  2. Step 2: Convert to fraction form
    169,521.52/254,283.56 = 78,328.48/x
  3. Step 3: Cross multiply
    169,521.52x = 254,283.56 × 78,328.48
  4. Step 4: Simplify right side
    169,521.52x = 19,917,644,743.79
  5. Step 5: Solve for x
    x = 19,917,644,743.79/169,521.52
  6. Step 6: Final answer
    x = 117,493.31

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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.