Home / 209,197.10-288,693.76-113,703.78

Finding the Fourth Proportional to 209,197.10, 288,693.76 and 113,703.78

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Solution

The fourth proportional to 209,197.10, 288,693.76 and 113,703.78 is: 156,912.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,197.10 : 288,693.76 = 113,703.78 : x
  2. Step 2: Convert to fraction form
    209,197.10/288,693.76 = 113,703.78/x
  3. Step 3: Cross multiply
    209,197.10x = 288,693.76 × 113,703.78
  4. Step 4: Simplify right side
    209,197.10x = 32,825,571,774.41
  5. Step 5: Solve for x
    x = 32,825,571,774.41/209,197.10
  6. Step 6: Final answer
    x = 156,912.17

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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.