Home / 128,960.46-193,642.92-109,228.59

Finding the Fourth Proportional to 128,960.46, 193,642.92 and 109,228.59

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Solution

The fourth proportional to 128,960.46, 193,642.92 and 109,228.59 is: 164,014.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,960.46 : 193,642.92 = 109,228.59 : x
  2. Step 2: Convert to fraction form
    128,960.46/193,642.92 = 109,228.59/x
  3. Step 3: Cross multiply
    128,960.46x = 193,642.92 × 109,228.59
  4. Step 4: Simplify right side
    128,960.46x = 21,151,343,115.08
  5. Step 5: Solve for x
    x = 21,151,343,115.08/128,960.46
  6. Step 6: Final answer
    x = 164,014.17

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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.