Home / 147,639.12-203,741.92-80,571.12

Finding the Fourth Proportional to 147,639.12, 203,741.92 and 80,571.12

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Solution

The fourth proportional to 147,639.12, 203,741.92 and 80,571.12 is: 111,188.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,639.12 : 203,741.92 = 80,571.12 : x
  2. Step 2: Convert to fraction form
    147,639.12/203,741.92 = 80,571.12/x
  3. Step 3: Cross multiply
    147,639.12x = 203,741.92 × 80,571.12
  4. Step 4: Simplify right side
    147,639.12x = 16,415,713,666.64
  5. Step 5: Solve for x
    x = 16,415,713,666.64/147,639.12
  6. Step 6: Final answer
    x = 111,188.11

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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.