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Finding the Fourth Proportional to 169,201.80, 253,729.80 and 84,929.40

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Solution

The fourth proportional to 169,201.80, 253,729.80 and 84,929.40 is: 127,357.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,201.80 : 253,729.80 = 84,929.40 : x
  2. Step 2: Convert to fraction form
    169,201.80/253,729.80 = 84,929.40/x
  3. Step 3: Cross multiply
    169,201.80x = 253,729.80 × 84,929.40
  4. Step 4: Simplify right side
    169,201.80x = 21,549,119,676.12
  5. Step 5: Solve for x
    x = 21,549,119,676.12/169,201.80
  6. Step 6: Final answer
    x = 127,357.51

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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.