Home / 121,908.52-168,232.98-68,193.28

Finding the Fourth Proportional to 121,908.52, 168,232.98 and 68,193.28

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Solution

The fourth proportional to 121,908.52, 168,232.98 and 68,193.28 is: 94,106.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,908.52 : 168,232.98 = 68,193.28 : x
  2. Step 2: Convert to fraction form
    121,908.52/168,232.98 = 68,193.28/x
  3. Step 3: Cross multiply
    121,908.52x = 168,232.98 × 68,193.28
  4. Step 4: Simplify right side
    121,908.52x = 11,472,358,710.37
  5. Step 5: Solve for x
    x = 11,472,358,710.37/121,908.52
  6. Step 6: Final answer
    x = 94,106.29

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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.