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Finding the Fourth Proportional to 119,627.60, 179,635.80 and 86,579.60

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Solution

The fourth proportional to 119,627.60, 179,635.80 and 86,579.60 is: 130,010.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,627.60 : 179,635.80 = 86,579.60 : x
  2. Step 2: Convert to fraction form
    119,627.60/179,635.80 = 86,579.60/x
  3. Step 3: Cross multiply
    119,627.60x = 179,635.80 × 86,579.60
  4. Step 4: Simplify right side
    119,627.60x = 15,552,795,709.68
  5. Step 5: Solve for x
    x = 15,552,795,709.68/119,627.60
  6. Step 6: Final answer
    x = 130,010.10

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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.