Home / 215,620.53-297,556.64-120,130.57

Finding the Fourth Proportional to 215,620.53, 297,556.64 and 120,130.57

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Solution

The fourth proportional to 215,620.53, 297,556.64 and 120,130.57 is: 165,780.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,620.53 : 297,556.64 = 120,130.57 : x
  2. Step 2: Convert to fraction form
    215,620.53/297,556.64 = 120,130.57/x
  3. Step 3: Cross multiply
    215,620.53x = 297,556.64 × 120,130.57
  4. Step 4: Simplify right side
    215,620.53x = 35,745,648,770.48
  5. Step 5: Solve for x
    x = 35,745,648,770.48/215,620.53
  6. Step 6: Final answer
    x = 165,780.36

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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.