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Finding the Fourth Proportional to 135,641.45, 187,187.45 and 75,214.64

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Solution

The fourth proportional to 135,641.45, 187,187.45 and 75,214.64 is: 103,797.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,641.45 : 187,187.45 = 75,214.64 : x
  2. Step 2: Convert to fraction form
    135,641.45/187,187.45 = 75,214.64/x
  3. Step 3: Cross multiply
    135,641.45x = 187,187.45 × 75,214.64
  4. Step 4: Simplify right side
    135,641.45x = 14,079,235,352.26
  5. Step 5: Solve for x
    x = 14,079,235,352.26/135,641.45
  6. Step 6: Final answer
    x = 103,797.44

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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.