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Finding the Fourth Proportional to 148,347.88, 204,721.50 and 84,685.48

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Solution

The fourth proportional to 148,347.88, 204,721.50 and 84,685.48 is: 116,866.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,347.88 : 204,721.50 = 84,685.48 : x
  2. Step 2: Convert to fraction form
    148,347.88/204,721.50 = 84,685.48/x
  3. Step 3: Cross multiply
    148,347.88x = 204,721.50 × 84,685.48
  4. Step 4: Simplify right side
    148,347.88x = 17,336,938,493.82
  5. Step 5: Solve for x
    x = 17,336,938,493.82/148,347.88
  6. Step 6: Final answer
    x = 116,866.78

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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.