Home / 128,195.18-192,290.64-49,326.50

Finding the Fourth Proportional to 128,195.18, 192,290.64 and 49,326.50

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Solution

The fourth proportional to 128,195.18, 192,290.64 and 49,326.50 is: 73,988.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,195.18 : 192,290.64 = 49,326.50 : x
  2. Step 2: Convert to fraction form
    128,195.18/192,290.64 = 49,326.50/x
  3. Step 3: Cross multiply
    128,195.18x = 192,290.64 × 49,326.50
  4. Step 4: Simplify right side
    128,195.18x = 9,485,024,253.96
  5. Step 5: Solve for x
    x = 9,485,024,253.96/128,195.18
  6. Step 6: Final answer
    x = 73,988.93

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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.