Home / 135,622.35-187,158.90-75,193.72

Finding the Fourth Proportional to 135,622.35, 187,158.90 and 75,193.72

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Solution

The fourth proportional to 135,622.35, 187,158.90 and 75,193.72 is: 103,767.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,622.35 : 187,158.90 = 75,193.72 : x
  2. Step 2: Convert to fraction form
    135,622.35/187,158.90 = 75,193.72/x
  3. Step 3: Cross multiply
    135,622.35x = 187,158.90 × 75,193.72
  4. Step 4: Simplify right side
    135,622.35x = 14,073,173,736.19
  5. Step 5: Solve for x
    x = 14,073,173,736.19/135,622.35
  6. Step 6: Final answer
    x = 103,767.36

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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.