Home / 211,543.75-291,939.02-122,119.75

Finding the Fourth Proportional to 211,543.75, 291,939.02 and 122,119.75

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Solution

The fourth proportional to 211,543.75, 291,939.02 and 122,119.75 is: 168,530.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,543.75 : 291,939.02 = 122,119.75 : x
  2. Step 2: Convert to fraction form
    211,543.75/291,939.02 = 122,119.75/x
  3. Step 3: Cross multiply
    211,543.75x = 291,939.02 × 122,119.75
  4. Step 4: Simplify right side
    211,543.75x = 35,651,520,137.65
  5. Step 5: Solve for x
    x = 35,651,520,137.65/211,543.75
  6. Step 6: Final answer
    x = 168,530.25

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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.