Home / 145,525.20-200,822.64-81,863.04

Finding the Fourth Proportional to 145,525.20, 200,822.64 and 81,863.04

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Solution

The fourth proportional to 145,525.20, 200,822.64 and 81,863.04 is: 112,969.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,525.20 : 200,822.64 = 81,863.04 : x
  2. Step 2: Convert to fraction form
    145,525.20/200,822.64 = 81,863.04/x
  3. Step 3: Cross multiply
    145,525.20x = 200,822.64 × 81,863.04
  4. Step 4: Simplify right side
    145,525.20x = 16,439,951,811.23
  5. Step 5: Solve for x
    x = 16,439,951,811.23/145,525.20
  6. Step 6: Final answer
    x = 112,969.79

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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.