Home / 141,980.54-195,930-78,318.36

Finding the Fourth Proportional to 141,980.54, 195,930 and 78,318.36

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Solution

The fourth proportional to 141,980.54, 195,930 and 78,318.36 is: 108,077.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,980.54 : 195,930 = 78,318.36 : x
  2. Step 2: Convert to fraction form
    141,980.54/195,930 = 78,318.36/x
  3. Step 3: Cross multiply
    141,980.54x = 195,930 × 78,318.36
  4. Step 4: Simplify right side
    141,980.54x = 15,344,916,274.80
  5. Step 5: Solve for x
    x = 15,344,916,274.80/141,980.54
  6. Step 6: Final answer
    x = 108,077.61

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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.