Home / 135,781.33-187,378.34-75,352.01

Finding the Fourth Proportional to 135,781.33, 187,378.34 and 75,352.01

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Solution

The fourth proportional to 135,781.33, 187,378.34 and 75,352.01 is: 103,985.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,781.33 : 187,378.34 = 75,352.01 : x
  2. Step 2: Convert to fraction form
    135,781.33/187,378.34 = 75,352.01/x
  3. Step 3: Cross multiply
    135,781.33x = 187,378.34 × 75,352.01
  4. Step 4: Simplify right side
    135,781.33x = 14,119,335,028.74
  5. Step 5: Solve for x
    x = 14,119,335,028.74/135,781.33
  6. Step 6: Final answer
    x = 103,985.84

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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.