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Finding the Fourth Proportional to 135,557.92, 187,069.92 and 75,137.64

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Solution

The fourth proportional to 135,557.92, 187,069.92 and 75,137.64 is: 103,689.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,557.92 : 187,069.92 = 75,137.64 : x
  2. Step 2: Convert to fraction form
    135,557.92/187,069.92 = 75,137.64/x
  3. Step 3: Cross multiply
    135,557.92x = 187,069.92 × 75,137.64
  4. Step 4: Simplify right side
    135,557.92x = 14,055,991,368.44
  5. Step 5: Solve for x
    x = 14,055,991,368.44/135,557.92
  6. Step 6: Final answer
    x = 103,689.93

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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.