Home / 189,171.66-261,178.47-117,649.02

Finding the Fourth Proportional to 189,171.66, 261,178.47 and 117,649.02

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Solution

The fourth proportional to 189,171.66, 261,178.47 and 117,649.02 is: 162,431.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,171.66 : 261,178.47 = 117,649.02 : x
  2. Step 2: Convert to fraction form
    189,171.66/261,178.47 = 117,649.02/x
  3. Step 3: Cross multiply
    189,171.66x = 261,178.47 × 117,649.02
  4. Step 4: Simplify right side
    189,171.66x = 30,727,391,040.60
  5. Step 5: Solve for x
    x = 30,727,391,040.60/189,171.66
  6. Step 6: Final answer
    x = 162,431.26

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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.