Home / 211,111.03-291,335.70-115,621.75

Finding the Fourth Proportional to 211,111.03, 291,335.70 and 115,621.75

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Solution

The fourth proportional to 211,111.03, 291,335.70 and 115,621.75 is: 159,559.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,111.03 : 291,335.70 = 115,621.75 : x
  2. Step 2: Convert to fraction form
    211,111.03/291,335.70 = 115,621.75/x
  3. Step 3: Cross multiply
    211,111.03x = 291,335.70 × 115,621.75
  4. Step 4: Simplify right side
    211,111.03x = 33,684,743,471.48
  5. Step 5: Solve for x
    x = 33,684,743,471.48/211,111.03
  6. Step 6: Final answer
    x = 159,559.37

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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.