Home / 167,931.81-231,427.02-120,102.12

Finding the Fourth Proportional to 167,931.81, 231,427.02 and 120,102.12

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Solution

The fourth proportional to 167,931.81, 231,427.02 and 120,102.12 is: 165,512.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,931.81 : 231,427.02 = 120,102.12 : x
  2. Step 2: Convert to fraction form
    167,931.81/231,427.02 = 120,102.12/x
  3. Step 3: Cross multiply
    167,931.81x = 231,427.02 × 120,102.12
  4. Step 4: Simplify right side
    167,931.81x = 27,794,875,727.28
  5. Step 5: Solve for x
    x = 27,794,875,727.28/167,931.81
  6. Step 6: Final answer
    x = 165,512.87

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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.