Home / 128,049.48-191,943-49,142.52

Finding the Fourth Proportional to 128,049.48, 191,943 and 49,142.52

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Solution

The fourth proportional to 128,049.48, 191,943 and 49,142.52 is: 73,663.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,049.48 : 191,943 = 49,142.52 : x
  2. Step 2: Convert to fraction form
    128,049.48/191,943 = 49,142.52/x
  3. Step 3: Cross multiply
    128,049.48x = 191,943 × 49,142.52
  4. Step 4: Simplify right side
    128,049.48x = 9,432,562,716.36
  5. Step 5: Solve for x
    x = 9,432,562,716.36/128,049.48
  6. Step 6: Final answer
    x = 73,663.42

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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.