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Finding the Fourth Proportional to 169,165.09, 253,046.35 and 128,879.25

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Solution

The fourth proportional to 169,165.09, 253,046.35 and 128,879.25 is: 192,784.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,165.09 : 253,046.35 = 128,879.25 : x
  2. Step 2: Convert to fraction form
    169,165.09/253,046.35 = 128,879.25/x
  3. Step 3: Cross multiply
    169,165.09x = 253,046.35 × 128,879.25
  4. Step 4: Simplify right side
    169,165.09x = 32,612,423,803.24
  5. Step 5: Solve for x
    x = 32,612,423,803.24/169,165.09
  6. Step 6: Final answer
    x = 192,784.60

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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.