Home / 165,719.20-248,665.20-72,234.40

Finding the Fourth Proportional to 165,719.20, 248,665.20 and 72,234.40

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Solution

The fourth proportional to 165,719.20, 248,665.20 and 72,234.40 is: 108,389.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,719.20 : 248,665.20 = 72,234.40 : x
  2. Step 2: Convert to fraction form
    165,719.20/248,665.20 = 72,234.40/x
  3. Step 3: Cross multiply
    165,719.20x = 248,665.20 × 72,234.40
  4. Step 4: Simplify right side
    165,719.20x = 17,962,181,522.88
  5. Step 5: Solve for x
    x = 17,962,181,522.88/165,719.20
  6. Step 6: Final answer
    x = 108,389.26

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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.