Home / 128,530.33-192,463.39-88,672.26

Finding the Fourth Proportional to 128,530.33, 192,463.39 and 88,672.26

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Solution

The fourth proportional to 128,530.33, 192,463.39 and 88,672.26 is: 132,779.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,530.33 : 192,463.39 = 88,672.26 : x
  2. Step 2: Convert to fraction form
    128,530.33/192,463.39 = 88,672.26/x
  3. Step 3: Cross multiply
    128,530.33x = 192,463.39 × 88,672.26
  4. Step 4: Simplify right side
    128,530.33x = 17,066,163,758.56
  5. Step 5: Solve for x
    x = 17,066,163,758.56/128,530.33
  6. Step 6: Final answer
    x = 132,779.27

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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.