Home / 135,196.29-186,593.63-78,640.47

Finding the Fourth Proportional to 135,196.29, 186,593.63 and 78,640.47

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Solution

The fourth proportional to 135,196.29, 186,593.63 and 78,640.47 is: 108,537.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,196.29 : 186,593.63 = 78,640.47 : x
  2. Step 2: Convert to fraction form
    135,196.29/186,593.63 = 78,640.47/x
  3. Step 3: Cross multiply
    135,196.29x = 186,593.63 × 78,640.47
  4. Step 4: Simplify right side
    135,196.29x = 14,673,810,369.00
  5. Step 5: Solve for x
    x = 14,673,810,369.00/135,196.29
  6. Step 6: Final answer
    x = 108,537.08

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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.