Home / 142,617.09-196,813.94-78,085.27

Finding the Fourth Proportional to 142,617.09, 196,813.94 and 78,085.27

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Solution

The fourth proportional to 142,617.09, 196,813.94 and 78,085.27 is: 107,758.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,617.09 : 196,813.94 = 78,085.27 : x
  2. Step 2: Convert to fraction form
    142,617.09/196,813.94 = 78,085.27/x
  3. Step 3: Cross multiply
    142,617.09x = 196,813.94 × 78,085.27
  4. Step 4: Simplify right side
    142,617.09x = 15,368,269,644.66
  5. Step 5: Solve for x
    x = 15,368,269,644.66/142,617.09
  6. Step 6: Final answer
    x = 107,758.96

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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.