Home / 209,187.20-288,680.58-113,693.90

Finding the Fourth Proportional to 209,187.20, 288,680.58 and 113,693.90

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Solution

The fourth proportional to 209,187.20, 288,680.58 and 113,693.90 is: 156,898.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,187.20 : 288,680.58 = 113,693.90 : x
  2. Step 2: Convert to fraction form
    209,187.20/288,680.58 = 113,693.90/x
  3. Step 3: Cross multiply
    209,187.20x = 288,680.58 × 113,693.90
  4. Step 4: Simplify right side
    209,187.20x = 32,821,220,994.46
  5. Step 5: Solve for x
    x = 32,821,220,994.46/209,187.20
  6. Step 6: Final answer
    x = 156,898.80

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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.