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Finding the Fourth Proportional to 167,419.11, 231,040.08 and 90,938.91

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Solution

The fourth proportional to 167,419.11, 231,040.08 and 90,938.91 is: 125,496.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,419.11 : 231,040.08 = 90,938.91 : x
  2. Step 2: Convert to fraction form
    167,419.11/231,040.08 = 90,938.91/x
  3. Step 3: Cross multiply
    167,419.11x = 231,040.08 × 90,938.91
  4. Step 4: Simplify right side
    167,419.11x = 21,010,533,041.51
  5. Step 5: Solve for x
    x = 21,010,533,041.51/167,419.11
  6. Step 6: Final answer
    x = 125,496.62

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1.5x scale

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.