Home / 165,555.20-248,138.40-76,620.89

Finding the Fourth Proportional to 165,555.20, 248,138.40 and 76,620.89

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Solution

The fourth proportional to 165,555.20, 248,138.40 and 76,620.89 is: 114,841.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,555.20 : 248,138.40 = 76,620.89 : x
  2. Step 2: Convert to fraction form
    165,555.20/248,138.40 = 76,620.89/x
  3. Step 3: Cross multiply
    165,555.20x = 248,138.40 × 76,620.89
  4. Step 4: Simplify right side
    165,555.20x = 19,012,585,051.18
  5. Step 5: Solve for x
    x = 19,012,585,051.18/165,555.20
  6. Step 6: Final answer
    x = 114,841.36

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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.