Home / 211,187.80-291,438.30-115,700.44

Finding the Fourth Proportional to 211,187.80, 291,438.30 and 115,700.44

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Solution

The fourth proportional to 211,187.80, 291,438.30 and 115,700.44 is: 159,666.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,187.80 : 291,438.30 = 115,700.44 : x
  2. Step 2: Convert to fraction form
    211,187.80/291,438.30 = 115,700.44/x
  3. Step 3: Cross multiply
    211,187.80x = 291,438.30 × 115,700.44
  4. Step 4: Simplify right side
    211,187.80x = 33,719,539,542.85
  5. Step 5: Solve for x
    x = 33,719,539,542.85/211,187.80
  6. Step 6: Final answer
    x = 159,666.13

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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.