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Finding the Fourth Proportional to 154,958.40, 232,437.60 and 107,719.20

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Solution

The fourth proportional to 154,958.40, 232,437.60 and 107,719.20 is: 161,578.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,958.40 : 232,437.60 = 107,719.20 : x
  2. Step 2: Convert to fraction form
    154,958.40/232,437.60 = 107,719.20/x
  3. Step 3: Cross multiply
    154,958.40x = 232,437.60 × 107,719.20
  4. Step 4: Simplify right side
    154,958.40x = 25,037,992,321.92
  5. Step 5: Solve for x
    x = 25,037,992,321.92/154,958.40
  6. Step 6: Final answer
    x = 161,578.80

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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.