Home / 209,137.21-288,611.17-113,643.88

Finding the Fourth Proportional to 209,137.21, 288,611.17 and 113,643.88

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Solution

The fourth proportional to 209,137.21, 288,611.17 and 113,643.88 is: 156,829.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,137.21 : 288,611.17 = 113,643.88 : x
  2. Step 2: Convert to fraction form
    209,137.21/288,611.17 = 113,643.88/x
  3. Step 3: Cross multiply
    209,137.21x = 288,611.17 × 113,643.88
  4. Step 4: Simplify right side
    209,137.21x = 32,798,892,164.50
  5. Step 5: Solve for x
    x = 32,798,892,164.50/209,137.21
  6. Step 6: Final answer
    x = 156,829.54

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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.