Home / 115,972.92-160,039.98-68,215.80

Finding the Fourth Proportional to 115,972.92, 160,039.98 and 68,215.80

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Solution

The fourth proportional to 115,972.92, 160,039.98 and 68,215.80 is: 94,136.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,972.92 : 160,039.98 = 68,215.80 : x
  2. Step 2: Convert to fraction form
    115,972.92/160,039.98 = 68,215.80/x
  3. Step 3: Cross multiply
    115,972.92x = 160,039.98 × 68,215.80
  4. Step 4: Simplify right side
    115,972.92x = 10,917,255,267.68
  5. Step 5: Solve for x
    x = 10,917,255,267.68/115,972.92
  6. Step 6: Final answer
    x = 94,136.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.