Home / 211,582.80-291,965.40-120,920.76

Finding the Fourth Proportional to 211,582.80, 291,965.40 and 120,920.76

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Solution

The fourth proportional to 211,582.80, 291,965.40 and 120,920.76 is: 166,859.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,582.80 : 291,965.40 = 120,920.76 : x
  2. Step 2: Convert to fraction form
    211,582.80/291,965.40 = 120,920.76/x
  3. Step 3: Cross multiply
    211,582.80x = 291,965.40 × 120,920.76
  4. Step 4: Simplify right side
    211,582.80x = 35,304,678,061.70
  5. Step 5: Solve for x
    x = 35,304,678,061.70/211,582.80
  6. Step 6: Final answer
    x = 166,859.87

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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.