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Finding the Fourth Proportional to 169,061.60, 253,640.40 and 84,720.08

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Solution

The fourth proportional to 169,061.60, 253,640.40 and 84,720.08 is: 127,104.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,061.60 : 253,640.40 = 84,720.08 : x
  2. Step 2: Convert to fraction form
    169,061.60/253,640.40 = 84,720.08/x
  3. Step 3: Cross multiply
    169,061.60x = 253,640.40 × 84,720.08
  4. Step 4: Simplify right side
    169,061.60x = 21,488,434,979.23
  5. Step 5: Solve for x
    x = 21,488,434,979.23/169,061.60
  6. Step 6: Final answer
    x = 127,104.17

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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.