Home / 128,246.43-192,390.32-39,499.91

Finding the Fourth Proportional to 128,246.43, 192,390.32 and 39,499.91

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Solution

The fourth proportional to 128,246.43, 192,390.32 and 39,499.91 is: 59,256.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,246.43 : 192,390.32 = 39,499.91 : x
  2. Step 2: Convert to fraction form
    128,246.43/192,390.32 = 39,499.91/x
  3. Step 3: Cross multiply
    128,246.43x = 192,390.32 × 39,499.91
  4. Step 4: Simplify right side
    128,246.43x = 7,599,399,165.42
  5. Step 5: Solve for x
    x = 7,599,399,165.42/128,246.43
  6. Step 6: Final answer
    x = 59,256.22

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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.