Home / 128,398.35-192,541.73-60,949.72

Finding the Fourth Proportional to 128,398.35, 192,541.73 and 60,949.72

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Solution

The fourth proportional to 128,398.35, 192,541.73 and 60,949.72 is: 91,398.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,398.35 : 192,541.73 = 60,949.72 : x
  2. Step 2: Convert to fraction form
    128,398.35/192,541.73 = 60,949.72/x
  3. Step 3: Cross multiply
    128,398.35x = 192,541.73 × 60,949.72
  4. Step 4: Simplify right side
    128,398.35x = 11,735,363,721.48
  5. Step 5: Solve for x
    x = 11,735,363,721.48/128,398.35
  6. Step 6: Final answer
    x = 91,398.09

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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.