Home / 122,478.48-169,005.78-68,751.72

Finding the Fourth Proportional to 122,478.48, 169,005.78 and 68,751.72

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Solution

The fourth proportional to 122,478.48, 169,005.78 and 68,751.72 is: 94,869.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,478.48 : 169,005.78 = 68,751.72 : x
  2. Step 2: Convert to fraction form
    122,478.48/169,005.78 = 68,751.72/x
  3. Step 3: Cross multiply
    122,478.48x = 169,005.78 × 68,751.72
  4. Step 4: Simplify right side
    122,478.48x = 11,619,438,064.94
  5. Step 5: Solve for x
    x = 11,619,438,064.94/122,478.48
  6. Step 6: Final answer
    x = 94,869.22

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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.