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Finding the Fourth Proportional to 169,194.78, 253,090.98 and 128,909.04

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Solution

The fourth proportional to 169,194.78, 253,090.98 and 128,909.04 is: 192,829.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,194.78 : 253,090.98 = 128,909.04 : x
  2. Step 2: Convert to fraction form
    169,194.78/253,090.98 = 128,909.04/x
  3. Step 3: Cross multiply
    169,194.78x = 253,090.98 × 128,909.04
  4. Step 4: Simplify right side
    169,194.78x = 32,625,715,264.46
  5. Step 5: Solve for x
    x = 32,625,715,264.46/169,194.78
  6. Step 6: Final answer
    x = 192,829.33

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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.