Home / 135,827.28-187,403.56-84,891.78

Finding the Fourth Proportional to 135,827.28, 187,403.56 and 84,891.78

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Solution

The fourth proportional to 135,827.28, 187,403.56 and 84,891.78 is: 117,126.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,827.28 : 187,403.56 = 84,891.78 : x
  2. Step 2: Convert to fraction form
    135,827.28/187,403.56 = 84,891.78/x
  3. Step 3: Cross multiply
    135,827.28x = 187,403.56 × 84,891.78
  4. Step 4: Simplify right side
    135,827.28x = 15,909,021,574.51
  5. Step 5: Solve for x
    x = 15,909,021,574.51/135,827.28
  6. Step 6: Final answer
    x = 117,126.85

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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.