Home / 135,131.61-186,480.39-74,703.81

Finding the Fourth Proportional to 135,131.61, 186,480.39 and 74,703.81

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Solution

The fourth proportional to 135,131.61, 186,480.39 and 74,703.81 is: 103,090.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,131.61 : 186,480.39 = 74,703.81 : x
  2. Step 2: Convert to fraction form
    135,131.61/186,480.39 = 74,703.81/x
  3. Step 3: Cross multiply
    135,131.61x = 186,480.39 × 74,703.81
  4. Step 4: Simplify right side
    135,131.61x = 13,930,795,623.29
  5. Step 5: Solve for x
    x = 13,930,795,623.29/135,131.61
  6. Step 6: Final answer
    x = 103,090.58

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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.