Home / 139,939.27-209,849.10-53,328.40

Finding the Fourth Proportional to 139,939.27, 209,849.10 and 53,328.40

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Solution

The fourth proportional to 139,939.27, 209,849.10 and 53,328.40 is: 79,969.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,939.27 : 209,849.10 = 53,328.40 : x
  2. Step 2: Convert to fraction form
    139,939.27/209,849.10 = 53,328.40/x
  3. Step 3: Cross multiply
    139,939.27x = 209,849.10 × 53,328.40
  4. Step 4: Simplify right side
    139,939.27x = 11,190,916,744.44
  5. Step 5: Solve for x
    x = 11,190,916,744.44/139,939.27
  6. Step 6: Final answer
    x = 79,969.81

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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.