Home / 209,102.72-288,561.29-113,609.79

Finding the Fourth Proportional to 209,102.72, 288,561.29 and 113,609.79

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Solution

The fourth proportional to 209,102.72, 288,561.29 and 113,609.79 is: 156,781.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,102.72 : 288,561.29 = 113,609.79 : x
  2. Step 2: Convert to fraction form
    209,102.72/288,561.29 = 113,609.79/x
  3. Step 3: Cross multiply
    209,102.72x = 288,561.29 × 113,609.79
  4. Step 4: Simplify right side
    209,102.72x = 32,783,386,990.98
  5. Step 5: Solve for x
    x = 32,783,386,990.98/209,102.72
  6. Step 6: Final answer
    x = 156,781.26

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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.