Home / 209,363.28-288,919.92-113,869.92

Finding the Fourth Proportional to 209,363.28, 288,919.92 and 113,869.92

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Solution

The fourth proportional to 209,363.28, 288,919.92 and 113,869.92 is: 157,139.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,363.28 : 288,919.92 = 113,869.92 : x
  2. Step 2: Convert to fraction form
    209,363.28/288,919.92 = 113,869.92/x
  3. Step 3: Cross multiply
    209,363.28x = 288,919.92 × 113,869.92
  4. Step 4: Simplify right side
    209,363.28x = 32,899,288,176.81
  5. Step 5: Solve for x
    x = 32,899,288,176.81/209,363.28
  6. Step 6: Final answer
    x = 157,139.72

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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.