Home / 211,136.54-291,373.14-120,490.70

Finding the Fourth Proportional to 211,136.54, 291,373.14 and 120,490.70

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Solution

The fourth proportional to 211,136.54, 291,373.14 and 120,490.70 is: 166,279.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,136.54 : 291,373.14 = 120,490.70 : x
  2. Step 2: Convert to fraction form
    211,136.54/291,373.14 = 120,490.70/x
  3. Step 3: Cross multiply
    211,136.54x = 291,373.14 × 120,490.70
  4. Step 4: Simplify right side
    211,136.54x = 35,107,753,599.80
  5. Step 5: Solve for x
    x = 35,107,753,599.80/211,136.54
  6. Step 6: Final answer
    x = 166,279.86

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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.