Home / 209,172.43-288,659.85-113,679.35

Finding the Fourth Proportional to 209,172.43, 288,659.85 and 113,679.35

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Solution

The fourth proportional to 209,172.43, 288,659.85 and 113,679.35 is: 156,878.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,172.43 : 288,659.85 = 113,679.35 : x
  2. Step 2: Convert to fraction form
    209,172.43/288,659.85 = 113,679.35/x
  3. Step 3: Cross multiply
    209,172.43x = 288,659.85 × 113,679.35
  4. Step 4: Simplify right side
    209,172.43x = 32,814,663,971.42
  5. Step 5: Solve for x
    x = 32,814,663,971.42/209,172.43
  6. Step 6: Final answer
    x = 156,878.54

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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.