Home / 116,977.40-161,239.20-91,438.64

Finding the Fourth Proportional to 116,977.40, 161,239.20 and 91,438.64

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Solution

The fourth proportional to 116,977.40, 161,239.20 and 91,438.64 is: 126,037.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,977.40 : 161,239.20 = 91,438.64 : x
  2. Step 2: Convert to fraction form
    116,977.40/161,239.20 = 91,438.64/x
  3. Step 3: Cross multiply
    116,977.40x = 161,239.20 × 91,438.64
  4. Step 4: Simplify right side
    116,977.40x = 14,743,493,162.69
  5. Step 5: Solve for x
    x = 14,743,493,162.69/116,977.40
  6. Step 6: Final answer
    x = 126,037.11

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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.