Home / 135,520.63-187,023.33-81,795.15

Finding the Fourth Proportional to 135,520.63, 187,023.33 and 81,795.15

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Solution

The fourth proportional to 135,520.63, 187,023.33 and 81,795.15 is: 112,880.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,520.63 : 187,023.33 = 81,795.15 : x
  2. Step 2: Convert to fraction form
    135,520.63/187,023.33 = 81,795.15/x
  3. Step 3: Cross multiply
    135,520.63x = 187,023.33 × 81,795.15
  4. Step 4: Simplify right side
    135,520.63x = 15,297,601,330.85
  5. Step 5: Solve for x
    x = 15,297,601,330.85/135,520.63
  6. Step 6: Final answer
    x = 112,880.24

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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.