Home / 135,431.10-186,895.44-75,000.42

Finding the Fourth Proportional to 135,431.10, 186,895.44 and 75,000.42

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Solution

The fourth proportional to 135,431.10, 186,895.44 and 75,000.42 is: 103,500.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,431.10 : 186,895.44 = 75,000.42 : x
  2. Step 2: Convert to fraction form
    135,431.10/186,895.44 = 75,000.42/x
  3. Step 3: Cross multiply
    135,431.10x = 186,895.44 × 75,000.42
  4. Step 4: Simplify right side
    135,431.10x = 14,017,236,496.08
  5. Step 5: Solve for x
    x = 14,017,236,496.08/135,431.10
  6. Step 6: Final answer
    x = 103,500.87

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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.