Home / 165,761.40-248,642.10-102,775.80

Finding the Fourth Proportional to 165,761.40, 248,642.10 and 102,775.80

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Solution

The fourth proportional to 165,761.40, 248,642.10 and 102,775.80 is: 154,163.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,761.40 : 248,642.10 = 102,775.80 : x
  2. Step 2: Convert to fraction form
    165,761.40/248,642.10 = 102,775.80/x
  3. Step 3: Cross multiply
    165,761.40x = 248,642.10 × 102,775.80
  4. Step 4: Simplify right side
    165,761.40x = 25,554,390,741.18
  5. Step 5: Solve for x
    x = 25,554,390,741.18/165,761.40
  6. Step 6: Final answer
    x = 154,163.70

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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.