Home / 136,669.78-188,608.98-79,304.77

Finding the Fourth Proportional to 136,669.78, 188,608.98 and 79,304.77

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Solution

The fourth proportional to 136,669.78, 188,608.98 and 79,304.77 is: 109,443.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,669.78 : 188,608.98 = 79,304.77 : x
  2. Step 2: Convert to fraction form
    136,669.78/188,608.98 = 79,304.77/x
  3. Step 3: Cross multiply
    136,669.78x = 188,608.98 × 79,304.77
  4. Step 4: Simplify right side
    136,669.78x = 14,957,591,778.83
  5. Step 5: Solve for x
    x = 14,957,591,778.83/136,669.78
  6. Step 6: Final answer
    x = 109,443.30

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1.5x scale

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.