Home / 139,869.12-193,016.94-76,207.38

Finding the Fourth Proportional to 139,869.12, 193,016.94 and 76,207.38

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Solution

The fourth proportional to 139,869.12, 193,016.94 and 76,207.38 is: 105,164.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,869.12 : 193,016.94 = 76,207.38 : x
  2. Step 2: Convert to fraction form
    139,869.12/193,016.94 = 76,207.38/x
  3. Step 3: Cross multiply
    139,869.12x = 193,016.94 × 76,207.38
  4. Step 4: Simplify right side
    139,869.12x = 14,709,315,293.02
  5. Step 5: Solve for x
    x = 14,709,315,293.02/139,869.12
  6. Step 6: Final answer
    x = 105,164.85

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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.