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Finding the Fourth Proportional to 169,139.79, 253,396.49 and 84,801.51

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Solution

The fourth proportional to 169,139.79, 253,396.49 and 84,801.51 is: 127,045.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,139.79 : 253,396.49 = 84,801.51 : x
  2. Step 2: Convert to fraction form
    169,139.79/253,396.49 = 84,801.51/x
  3. Step 3: Cross multiply
    169,139.79x = 253,396.49 × 84,801.51
  4. Step 4: Simplify right side
    169,139.79x = 21,488,404,556.69
  5. Step 5: Solve for x
    x = 21,488,404,556.69/169,139.79
  6. Step 6: Final answer
    x = 127,045.24

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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.