Home / 139,942.28-209,926.01-45,174.71

Finding the Fourth Proportional to 139,942.28, 209,926.01 and 45,174.71

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Solution

The fourth proportional to 139,942.28, 209,926.01 and 45,174.71 is: 67,766.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,942.28 : 209,926.01 = 45,174.71 : x
  2. Step 2: Convert to fraction form
    139,942.28/209,926.01 = 45,174.71/x
  3. Step 3: Cross multiply
    139,942.28x = 209,926.01 × 45,174.71
  4. Step 4: Simplify right side
    139,942.28x = 9,483,346,623.21
  5. Step 5: Solve for x
    x = 9,483,346,623.21/139,942.28
  6. Step 6: Final answer
    x = 67,766.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.