Home / 128,332.55-192,499.74-39,584.09

Finding the Fourth Proportional to 128,332.55, 192,499.74 and 39,584.09

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Solution

The fourth proportional to 128,332.55, 192,499.74 and 39,584.09 is: 59,376.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,332.55 : 192,499.74 = 39,584.09 : x
  2. Step 2: Convert to fraction form
    128,332.55/192,499.74 = 39,584.09/x
  3. Step 3: Cross multiply
    128,332.55x = 192,499.74 × 39,584.09
  4. Step 4: Simplify right side
    128,332.55x = 7,619,927,514.39
  5. Step 5: Solve for x
    x = 7,619,927,514.39/128,332.55
  6. Step 6: Final answer
    x = 59,376.42

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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.