Home / 209,463.12-289,065.20-113,975.96

Finding the Fourth Proportional to 209,463.12, 289,065.20 and 113,975.96

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Solution

The fourth proportional to 209,463.12, 289,065.20 and 113,975.96 is: 157,290.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,463.12 : 289,065.20 = 113,975.96 : x
  2. Step 2: Convert to fraction form
    209,463.12/289,065.20 = 113,975.96/x
  3. Step 3: Cross multiply
    209,463.12x = 289,065.20 × 113,975.96
  4. Step 4: Simplify right side
    209,463.12x = 32,946,481,657.39
  5. Step 5: Solve for x
    x = 32,946,481,657.39/209,463.12
  6. Step 6: Final answer
    x = 157,290.13

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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.