Home / 128,974.74-193,233.30-53,929.50

Finding the Fourth Proportional to 128,974.74, 193,233.30 and 53,929.50

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Solution

The fourth proportional to 128,974.74, 193,233.30 and 53,929.50 is: 80,798.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,974.74 : 193,233.30 = 53,929.50 : x
  2. Step 2: Convert to fraction form
    128,974.74/193,233.30 = 53,929.50/x
  3. Step 3: Cross multiply
    128,974.74x = 193,233.30 × 53,929.50
  4. Step 4: Simplify right side
    128,974.74x = 10,420,975,252.35
  5. Step 5: Solve for x
    x = 10,420,975,252.35/128,974.74
  6. Step 6: Final answer
    x = 80,798.58

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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.