Home / 143,405.22-215,102.97-54,655.50

Finding the Fourth Proportional to 143,405.22, 215,102.97 and 54,655.50

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Solution

The fourth proportional to 143,405.22, 215,102.97 and 54,655.50 is: 81,981.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,405.22 : 215,102.97 = 54,655.50 : x
  2. Step 2: Convert to fraction form
    143,405.22/215,102.97 = 54,655.50/x
  3. Step 3: Cross multiply
    143,405.22x = 215,102.97 × 54,655.50
  4. Step 4: Simplify right side
    143,405.22x = 11,756,560,376.84
  5. Step 5: Solve for x
    x = 11,756,560,376.84/143,405.22
  6. Step 6: Final answer
    x = 81,981.40

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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.