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Finding the Fourth Proportional to 167,903.12, 231,631.45 and 113,437.78

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Solution

The fourth proportional to 167,903.12, 231,631.45 and 113,437.78 is: 156,493.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,903.12 : 231,631.45 = 113,437.78 : x
  2. Step 2: Convert to fraction form
    167,903.12/231,631.45 = 113,437.78/x
  3. Step 3: Cross multiply
    167,903.12x = 231,631.45 × 113,437.78
  4. Step 4: Simplify right side
    167,903.12x = 26,275,756,603.51
  5. Step 5: Solve for x
    x = 26,275,756,603.51/167,903.12
  6. Step 6: Final answer
    x = 156,493.56

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.