Home / 117,158.43-161,677.35-66,171.24

Finding the Fourth Proportional to 117,158.43, 161,677.35 and 66,171.24

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Solution

The fourth proportional to 117,158.43, 161,677.35 and 66,171.24 is: 91,315.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,158.43 : 161,677.35 = 66,171.24 : x
  2. Step 2: Convert to fraction form
    117,158.43/161,677.35 = 66,171.24/x
  3. Step 3: Cross multiply
    117,158.43x = 161,677.35 × 66,171.24
  4. Step 4: Simplify right side
    117,158.43x = 10,698,390,729.41
  5. Step 5: Solve for x
    x = 10,698,390,729.41/117,158.43
  6. Step 6: Final answer
    x = 91,315.59

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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.