Home / 209,069.09-288,515.69-113,575.86

Finding the Fourth Proportional to 209,069.09, 288,515.69 and 113,575.86

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Solution

The fourth proportional to 209,069.09, 288,515.69 and 113,575.86 is: 156,734.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,069.09 : 288,515.69 = 113,575.86 : x
  2. Step 2: Convert to fraction form
    209,069.09/288,515.69 = 113,575.86/x
  3. Step 3: Cross multiply
    209,069.09x = 288,515.69 × 113,575.86
  4. Step 4: Simplify right side
    209,069.09x = 32,768,417,615.24
  5. Step 5: Solve for x
    x = 32,768,417,615.24/209,069.09
  6. Step 6: Final answer
    x = 156,734.87

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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.