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Finding the Fourth Proportional to 135,850.55, 187,479.81 and 75,422.03

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Solution

The fourth proportional to 135,850.55, 187,479.81 and 75,422.03 is: 104,085.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,850.55 : 187,479.81 = 75,422.03 : x
  2. Step 2: Convert to fraction form
    135,850.55/187,479.81 = 75,422.03/x
  3. Step 3: Cross multiply
    135,850.55x = 187,479.81 × 75,422.03
  4. Step 4: Simplify right side
    135,850.55x = 14,140,106,916.82
  5. Step 5: Solve for x
    x = 14,140,106,916.82/135,850.55
  6. Step 6: Final answer
    x = 104,085.76

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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.