Home / 139,990.74-193,189.26-76,331.76

Finding the Fourth Proportional to 139,990.74, 193,189.26 and 76,331.76

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Solution

The fourth proportional to 139,990.74, 193,189.26 and 76,331.76 is: 105,338.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,990.74 : 193,189.26 = 76,331.76 : x
  2. Step 2: Convert to fraction form
    139,990.74/193,189.26 = 76,331.76/x
  3. Step 3: Cross multiply
    139,990.74x = 193,189.26 × 76,331.76
  4. Step 4: Simplify right side
    139,990.74x = 14,746,476,228.90
  5. Step 5: Solve for x
    x = 14,746,476,228.90/139,990.74
  6. Step 6: Final answer
    x = 105,338.94

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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.