Home / 142,093.44-196,088.92-78,431.22

Finding the Fourth Proportional to 142,093.44, 196,088.92 and 78,431.22

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Solution

The fourth proportional to 142,093.44, 196,088.92 and 78,431.22 is: 108,235.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,093.44 : 196,088.92 = 78,431.22 : x
  2. Step 2: Convert to fraction form
    142,093.44/196,088.92 = 78,431.22/x
  3. Step 3: Cross multiply
    142,093.44x = 196,088.92 × 78,431.22
  4. Step 4: Simplify right side
    142,093.44x = 15,379,493,028.00
  5. Step 5: Solve for x
    x = 15,379,493,028.00/142,093.44
  6. Step 6: Final answer
    x = 108,235.07

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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.