Home / 165,427.65-247,977.45-81,118.80

Finding the Fourth Proportional to 165,427.65, 247,977.45 and 81,118.80

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Solution

The fourth proportional to 165,427.65, 247,977.45 and 81,118.80 is: 121,597.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,427.65 : 247,977.45 = 81,118.80 : x
  2. Step 2: Convert to fraction form
    165,427.65/247,977.45 = 81,118.80/x
  3. Step 3: Cross multiply
    165,427.65x = 247,977.45 × 81,118.80
  4. Step 4: Simplify right side
    165,427.65x = 20,115,633,171.06
  5. Step 5: Solve for x
    x = 20,115,633,171.06/165,427.65
  6. Step 6: Final answer
    x = 121,597.77

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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.