Home / 165,506.40-248,319.72-81,257.58

Finding the Fourth Proportional to 165,506.40, 248,319.72 and 81,257.58

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Solution

The fourth proportional to 165,506.40, 248,319.72 and 81,257.58 is: 121,915.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,506.40 : 248,319.72 = 81,257.58 : x
  2. Step 2: Convert to fraction form
    165,506.40/248,319.72 = 81,257.58/x
  3. Step 3: Cross multiply
    165,506.40x = 248,319.72 × 81,257.58
  4. Step 4: Simplify right side
    165,506.40x = 20,177,859,513.48
  5. Step 5: Solve for x
    x = 20,177,859,513.48/165,506.40
  6. Step 6: Final answer
    x = 121,915.89

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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.