Home / 142,091.44-196,086.20-78,429.25

Finding the Fourth Proportional to 142,091.44, 196,086.20 and 78,429.25

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Solution

The fourth proportional to 142,091.44, 196,086.20 and 78,429.25 is: 108,232.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,091.44 : 196,086.20 = 78,429.25 : x
  2. Step 2: Convert to fraction form
    142,091.44/196,086.20 = 78,429.25/x
  3. Step 3: Cross multiply
    142,091.44x = 196,086.20 × 78,429.25
  4. Step 4: Simplify right side
    142,091.44x = 15,378,893,895.48
  5. Step 5: Solve for x
    x = 15,378,893,895.48/142,091.44
  6. Step 6: Final answer
    x = 108,232.38

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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.