Home / 161,712.30-242,240.40-91,509.60

Finding the Fourth Proportional to 161,712.30, 242,240.40 and 91,509.60

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Solution

The fourth proportional to 161,712.30, 242,240.40 and 91,509.60 is: 137,078.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,712.30 : 242,240.40 = 91,509.60 : x
  2. Step 2: Convert to fraction form
    161,712.30/242,240.40 = 91,509.60/x
  3. Step 3: Cross multiply
    161,712.30x = 242,240.40 × 91,509.60
  4. Step 4: Simplify right side
    161,712.30x = 22,167,322,107.84
  5. Step 5: Solve for x
    x = 22,167,322,107.84/161,712.30
  6. Step 6: Final answer
    x = 137,078.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.