Home / 142,889.86-197,186.40-82,459.78

Finding the Fourth Proportional to 142,889.86, 197,186.40 and 82,459.78

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Solution

The fourth proportional to 142,889.86, 197,186.40 and 82,459.78 is: 113,793.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,889.86 : 197,186.40 = 82,459.78 : x
  2. Step 2: Convert to fraction form
    142,889.86/197,186.40 = 82,459.78/x
  3. Step 3: Cross multiply
    142,889.86x = 197,186.40 × 82,459.78
  4. Step 4: Simplify right side
    142,889.86x = 16,259,947,162.99
  5. Step 5: Solve for x
    x = 16,259,947,162.99/142,889.86
  6. Step 6: Final answer
    x = 113,793.57

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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.