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Finding the Fourth Proportional to 169,287.76, 253,899.51 and 85,025.35

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Solution

The fourth proportional to 169,287.76, 253,899.51 and 85,025.35 is: 127,521.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,287.76 : 253,899.51 = 85,025.35 : x
  2. Step 2: Convert to fraction form
    169,287.76/253,899.51 = 85,025.35/x
  3. Step 3: Cross multiply
    169,287.76x = 253,899.51 × 85,025.35
  4. Step 4: Simplify right side
    169,287.76x = 21,587,894,702.58
  5. Step 5: Solve for x
    x = 21,587,894,702.58/169,287.76
  6. Step 6: Final answer
    x = 127,521.89

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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.