Home / 165,377.40-248,113.20-81,162.86

Finding the Fourth Proportional to 165,377.40, 248,113.20 and 81,162.86

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Solution

The fourth proportional to 165,377.40, 248,113.20 and 81,162.86 is: 121,767.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,377.40 : 248,113.20 = 81,162.86 : x
  2. Step 2: Convert to fraction form
    165,377.40/248,113.20 = 81,162.86/x
  3. Step 3: Cross multiply
    165,377.40x = 248,113.20 × 81,162.86
  4. Step 4: Simplify right side
    165,377.40x = 20,137,576,915.75
  5. Step 5: Solve for x
    x = 20,137,576,915.75/165,377.40
  6. Step 6: Final answer
    x = 121,767.41

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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.