Home / 215,723.13-297,708.05-120,230.51

Finding the Fourth Proportional to 215,723.13, 297,708.05 and 120,230.51

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Solution

The fourth proportional to 215,723.13, 297,708.05 and 120,230.51 is: 165,923.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,723.13 : 297,708.05 = 120,230.51 : x
  2. Step 2: Convert to fraction form
    215,723.13/297,708.05 = 120,230.51/x
  3. Step 3: Cross multiply
    215,723.13x = 297,708.05 × 120,230.51
  4. Step 4: Simplify right side
    215,723.13x = 35,793,590,238.91
  5. Step 5: Solve for x
    x = 35,793,590,238.91/215,723.13
  6. Step 6: Final answer
    x = 165,923.75

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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.