Home / 165,729.15-248,429.70-81,420.30

Finding the Fourth Proportional to 165,729.15, 248,429.70 and 81,420.30

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Solution

The fourth proportional to 165,729.15, 248,429.70 and 81,420.30 is: 122,049.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,729.15 : 248,429.70 = 81,420.30 : x
  2. Step 2: Convert to fraction form
    165,729.15/248,429.70 = 81,420.30/x
  3. Step 3: Cross multiply
    165,729.15x = 248,429.70 × 81,420.30
  4. Step 4: Simplify right side
    165,729.15x = 20,227,220,702.91
  5. Step 5: Solve for x
    x = 20,227,220,702.91/165,729.15
  6. Step 6: Final answer
    x = 122,049.87

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1.5x scale

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.