Home / 128,228.52-192,360.96-39,489.24

Finding the Fourth Proportional to 128,228.52, 192,360.96 and 39,489.24

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Solution

The fourth proportional to 128,228.52, 192,360.96 and 39,489.24 is: 59,239.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,228.52 : 192,360.96 = 39,489.24 : x
  2. Step 2: Convert to fraction form
    128,228.52/192,360.96 = 39,489.24/x
  3. Step 3: Cross multiply
    128,228.52x = 192,360.96 × 39,489.24
  4. Step 4: Simplify right side
    128,228.52x = 7,596,188,116.07
  5. Step 5: Solve for x
    x = 7,596,188,116.07/128,228.52
  6. Step 6: Final answer
    x = 59,239.46

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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.