Home / 145,046.20-200,163.18-81,384.22

Finding the Fourth Proportional to 145,046.20, 200,163.18 and 81,384.22

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Solution

The fourth proportional to 145,046.20, 200,163.18 and 81,384.22 is: 112,309.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,046.20 : 200,163.18 = 81,384.22 : x
  2. Step 2: Convert to fraction form
    145,046.20/200,163.18 = 81,384.22/x
  3. Step 3: Cross multiply
    145,046.20x = 200,163.18 × 81,384.22
  4. Step 4: Simplify right side
    145,046.20x = 16,290,124,277.02
  5. Step 5: Solve for x
    x = 16,290,124,277.02/145,046.20
  6. Step 6: Final answer
    x = 112,309.90

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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.