Home / 142,552.21-196,728.22-78,890.02

Finding the Fourth Proportional to 142,552.21, 196,728.22 and 78,890.02

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Solution

The fourth proportional to 142,552.21, 196,728.22 and 78,890.02 is: 108,871.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,552.21 : 196,728.22 = 78,890.02 : x
  2. Step 2: Convert to fraction form
    142,552.21/196,728.22 = 78,890.02/x
  3. Step 3: Cross multiply
    142,552.21x = 196,728.22 × 78,890.02
  4. Step 4: Simplify right side
    142,552.21x = 15,519,893,504.96
  5. Step 5: Solve for x
    x = 15,519,893,504.96/142,552.21
  6. Step 6: Final answer
    x = 108,871.65

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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.