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Finding the Fourth Proportional to 169,890.30, 255,029.85 and 99,809.10

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Solution

The fourth proportional to 169,890.30, 255,029.85 and 99,809.10 is: 149,827.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,890.30 : 255,029.85 = 99,809.10 : x
  2. Step 2: Convert to fraction form
    169,890.30/255,029.85 = 99,809.10/x
  3. Step 3: Cross multiply
    169,890.30x = 255,029.85 × 99,809.10
  4. Step 4: Simplify right side
    169,890.30x = 25,454,299,801.64
  5. Step 5: Solve for x
    x = 25,454,299,801.64/169,890.30
  6. Step 6: Final answer
    x = 149,827.86

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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.