Home / 143,403.92-197,897.58-79,740.35

Finding the Fourth Proportional to 143,403.92, 197,897.58 and 79,740.35

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Solution

The fourth proportional to 143,403.92, 197,897.58 and 79,740.35 is: 110,041.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,403.92 : 197,897.58 = 79,740.35 : x
  2. Step 2: Convert to fraction form
    143,403.92/197,897.58 = 79,740.35/x
  3. Step 3: Cross multiply
    143,403.92x = 197,897.58 × 79,740.35
  4. Step 4: Simplify right side
    143,403.92x = 15,780,422,378.30
  5. Step 5: Solve for x
    x = 15,780,422,378.30/143,403.92
  6. Step 6: Final answer
    x = 110,041.78

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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.