Home / 134,151.56-185,121.64-80,409.68

Finding the Fourth Proportional to 134,151.56, 185,121.64 and 80,409.68

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Solution

The fourth proportional to 134,151.56, 185,121.64 and 80,409.68 is: 110,960.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,151.56 : 185,121.64 = 80,409.68 : x
  2. Step 2: Convert to fraction form
    134,151.56/185,121.64 = 80,409.68/x
  3. Step 3: Cross multiply
    134,151.56x = 185,121.64 × 80,409.68
  4. Step 4: Simplify right side
    134,151.56x = 14,885,570,505.82
  5. Step 5: Solve for x
    x = 14,885,570,505.82/134,151.56
  6. Step 6: Final answer
    x = 110,960.85

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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.