Home / 119,899.92-165,528.18-72,165

Finding the Fourth Proportional to 119,899.92, 165,528.18 and 72,165

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Solution

The fourth proportional to 119,899.92, 165,528.18 and 72,165 is: 99,627.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,899.92 : 165,528.18 = 72,165 : x
  2. Step 2: Convert to fraction form
    119,899.92/165,528.18 = 72,165/x
  3. Step 3: Cross multiply
    119,899.92x = 165,528.18 × 72,165
  4. Step 4: Simplify right side
    119,899.92x = 11,945,341,109.70
  5. Step 5: Solve for x
    x = 11,945,341,109.70/119,899.92
  6. Step 6: Final answer
    x = 99,627.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.