Home / 211,129.84-291,359.28-115,642.60

Finding the Fourth Proportional to 211,129.84, 291,359.28 and 115,642.60

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Solution

The fourth proportional to 211,129.84, 291,359.28 and 115,642.60 is: 159,586.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,129.84 : 291,359.28 = 115,642.60 : x
  2. Step 2: Convert to fraction form
    211,129.84/291,359.28 = 115,642.60/x
  3. Step 3: Cross multiply
    211,129.84x = 291,359.28 × 115,642.60
  4. Step 4: Simplify right side
    211,129.84x = 33,693,544,673.33
  5. Step 5: Solve for x
    x = 33,693,544,673.33/211,129.84
  6. Step 6: Final answer
    x = 159,586.84

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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.