Home / 252,050.64-378,113.30-81,215.11

Finding the Fourth Proportional to 252,050.64, 378,113.30 and 81,215.11

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Solution

The fourth proportional to 252,050.64, 378,113.30 and 81,215.11 is: 121,834.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,050.64 : 378,113.30 = 81,215.11 : x
  2. Step 2: Convert to fraction form
    252,050.64/378,113.30 = 81,215.11/x
  3. Step 3: Cross multiply
    252,050.64x = 378,113.30 × 81,215.11
  4. Step 4: Simplify right side
    252,050.64x = 30,708,513,251.96
  5. Step 5: Solve for x
    x = 30,708,513,251.96/252,050.64
  6. Step 6: Final answer
    x = 121,834.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.