Home / 209,186.18-288,679.20-113,692.90

Finding the Fourth Proportional to 209,186.18, 288,679.20 and 113,692.90

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Solution

The fourth proportional to 209,186.18, 288,679.20 and 113,692.90 is: 156,897.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,186.18 : 288,679.20 = 113,692.90 : x
  2. Step 2: Convert to fraction form
    209,186.18/288,679.20 = 113,692.90/x
  3. Step 3: Cross multiply
    209,186.18x = 288,679.20 × 113,692.90
  4. Step 4: Simplify right side
    209,186.18x = 32,820,775,417.68
  5. Step 5: Solve for x
    x = 32,820,775,417.68/209,186.18
  6. Step 6: Final answer
    x = 156,897.44

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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.