Home / 165,135.87-247,530.63-80,779.59

Finding the Fourth Proportional to 165,135.87, 247,530.63 and 80,779.59

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Solution

The fourth proportional to 165,135.87, 247,530.63 and 80,779.59 is: 121,084.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,135.87 : 247,530.63 = 80,779.59 : x
  2. Step 2: Convert to fraction form
    165,135.87/247,530.63 = 80,779.59/x
  3. Step 3: Cross multiply
    165,135.87x = 247,530.63 × 80,779.59
  4. Step 4: Simplify right side
    165,135.87x = 19,995,422,803.84
  5. Step 5: Solve for x
    x = 19,995,422,803.84/165,135.87
  6. Step 6: Final answer
    x = 121,084.67

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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.