Home / 154,445.40-231,579.36-82,309.50

Finding the Fourth Proportional to 154,445.40, 231,579.36 and 82,309.50

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Solution

The fourth proportional to 154,445.40, 231,579.36 and 82,309.50 is: 123,416.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,445.40 : 231,579.36 = 82,309.50 : x
  2. Step 2: Convert to fraction form
    154,445.40/231,579.36 = 82,309.50/x
  3. Step 3: Cross multiply
    154,445.40x = 231,579.36 × 82,309.50
  4. Step 4: Simplify right side
    154,445.40x = 19,061,181,331.92
  5. Step 5: Solve for x
    x = 19,061,181,331.92/154,445.40
  6. Step 6: Final answer
    x = 123,416.96

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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.