Home / 145,043.23-200,163.10-81,385.73

Finding the Fourth Proportional to 145,043.23, 200,163.10 and 81,385.73

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Solution

The fourth proportional to 145,043.23, 200,163.10 and 81,385.73 is: 112,314.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,043.23 : 200,163.10 = 81,385.73 : x
  2. Step 2: Convert to fraction form
    145,043.23/200,163.10 = 81,385.73/x
  3. Step 3: Cross multiply
    145,043.23x = 200,163.10 × 81,385.73
  4. Step 4: Simplify right side
    145,043.23x = 16,290,420,388.90
  5. Step 5: Solve for x
    x = 16,290,420,388.90/145,043.23
  6. Step 6: Final answer
    x = 112,314.24

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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.