Home / 143,618.40-215,341.20-73,634.40

Finding the Fourth Proportional to 143,618.40, 215,341.20 and 73,634.40

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Solution

The fourth proportional to 143,618.40, 215,341.20 and 73,634.40 is: 110,407.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,618.40 : 215,341.20 = 73,634.40 : x
  2. Step 2: Convert to fraction form
    143,618.40/215,341.20 = 73,634.40/x
  3. Step 3: Cross multiply
    143,618.40x = 215,341.20 × 73,634.40
  4. Step 4: Simplify right side
    143,618.40x = 15,856,520,057.28
  5. Step 5: Solve for x
    x = 15,856,520,057.28/143,618.40
  6. Step 6: Final answer
    x = 110,407.30

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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.