Home / 209,362.05-288,923.29-113,869.40

Finding the Fourth Proportional to 209,362.05, 288,923.29 and 113,869.40

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Solution

The fourth proportional to 209,362.05, 288,923.29 and 113,869.40 is: 157,141.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,362.05 : 288,923.29 = 113,869.40 : x
  2. Step 2: Convert to fraction form
    209,362.05/288,923.29 = 113,869.40/x
  3. Step 3: Cross multiply
    209,362.05x = 288,923.29 × 113,869.40
  4. Step 4: Simplify right side
    209,362.05x = 32,899,519,949.04
  5. Step 5: Solve for x
    x = 32,899,519,949.04/209,362.05
  6. Step 6: Final answer
    x = 157,141.75

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1.5x scale

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.