Home / 165,135.39-247,529.61-80,779.02

Finding the Fourth Proportional to 165,135.39, 247,529.61 and 80,779.02

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Solution

The fourth proportional to 165,135.39, 247,529.61 and 80,779.02 is: 121,083.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,135.39 : 247,529.61 = 80,779.02 : x
  2. Step 2: Convert to fraction form
    165,135.39/247,529.61 = 80,779.02/x
  3. Step 3: Cross multiply
    165,135.39x = 247,529.61 × 80,779.02
  4. Step 4: Simplify right side
    165,135.39x = 19,995,199,316.78
  5. Step 5: Solve for x
    x = 19,995,199,316.78/165,135.39
  6. Step 6: Final answer
    x = 121,083.67

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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.