Home / 128,197.18-192,293.64-49,328.50

Finding the Fourth Proportional to 128,197.18, 192,293.64 and 49,328.50

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Solution

The fourth proportional to 128,197.18, 192,293.64 and 49,328.50 is: 73,991.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,197.18 : 192,293.64 = 49,328.50 : x
  2. Step 2: Convert to fraction form
    128,197.18/192,293.64 = 49,328.50/x
  3. Step 3: Cross multiply
    128,197.18x = 192,293.64 × 49,328.50
  4. Step 4: Simplify right side
    128,197.18x = 9,485,556,820.74
  5. Step 5: Solve for x
    x = 9,485,556,820.74/128,197.18
  6. Step 6: Final answer
    x = 73,991.93

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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.