Home / 136,331.54-188,088.83-78,939.53

Finding the Fourth Proportional to 136,331.54, 188,088.83 and 78,939.53

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Solution

The fourth proportional to 136,331.54, 188,088.83 and 78,939.53 is: 108,908.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,331.54 : 188,088.83 = 78,939.53 : x
  2. Step 2: Convert to fraction form
    136,331.54/188,088.83 = 78,939.53/x
  3. Step 3: Cross multiply
    136,331.54x = 188,088.83 × 78,939.53
  4. Step 4: Simplify right side
    136,331.54x = 14,847,643,504.66
  5. Step 5: Solve for x
    x = 14,847,643,504.66/136,331.54
  6. Step 6: Final answer
    x = 108,908.35

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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.