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Finding the Fourth Proportional to 154,802.60, 213,625.22 and 86,819.56

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Solution

The fourth proportional to 154,802.60, 213,625.22 and 86,819.56 is: 119,809.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,802.60 : 213,625.22 = 86,819.56 : x
  2. Step 2: Convert to fraction form
    154,802.60/213,625.22 = 86,819.56/x
  3. Step 3: Cross multiply
    154,802.60x = 213,625.22 × 86,819.56
  4. Step 4: Simplify right side
    154,802.60x = 18,546,847,605.30
  5. Step 5: Solve for x
    x = 18,546,847,605.30/154,802.60
  6. Step 6: Final answer
    x = 119,809.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.