Home / 211,454.28-291,780.02-120,816.11

Finding the Fourth Proportional to 211,454.28, 291,780.02 and 120,816.11

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Solution

The fourth proportional to 211,454.28, 291,780.02 and 120,816.11 is: 166,710.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,454.28 : 291,780.02 = 120,816.11 : x
  2. Step 2: Convert to fraction form
    211,454.28/291,780.02 = 120,816.11/x
  3. Step 3: Cross multiply
    211,454.28x = 291,780.02 × 120,816.11
  4. Step 4: Simplify right side
    211,454.28x = 35,251,726,388.04
  5. Step 5: Solve for x
    x = 35,251,726,388.04/211,454.28
  6. Step 6: Final answer
    x = 166,710.87

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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.