Home / 211,507.50-291,891.87-122,112.30

Finding the Fourth Proportional to 211,507.50, 291,891.87 and 122,112.30

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Solution

The fourth proportional to 211,507.50, 291,891.87 and 122,112.30 is: 168,521.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,507.50 : 291,891.87 = 122,112.30 : x
  2. Step 2: Convert to fraction form
    211,507.50/291,891.87 = 122,112.30/x
  3. Step 3: Cross multiply
    211,507.50x = 291,891.87 × 122,112.30
  4. Step 4: Simplify right side
    211,507.50x = 35,643,587,597.00
  5. Step 5: Solve for x
    x = 35,643,587,597.00/211,507.50
  6. Step 6: Final answer
    x = 168,521.62

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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.