Home / 135,511.08-187,002.81-75,081.50

Finding the Fourth Proportional to 135,511.08, 187,002.81 and 75,081.50

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Solution

The fourth proportional to 135,511.08, 187,002.81 and 75,081.50 is: 103,611.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,511.08 : 187,002.81 = 75,081.50 : x
  2. Step 2: Convert to fraction form
    135,511.08/187,002.81 = 75,081.50/x
  3. Step 3: Cross multiply
    135,511.08x = 187,002.81 × 75,081.50
  4. Step 4: Simplify right side
    135,511.08x = 14,040,451,245.26
  5. Step 5: Solve for x
    x = 14,040,451,245.26/135,511.08
  6. Step 6: Final answer
    x = 103,611.10

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1.5x scale

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.