Home / 102,890.28-141,908.52-68,887.96

Finding the Fourth Proportional to 102,890.28, 141,908.52 and 68,887.96

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Solution

The fourth proportional to 102,890.28, 141,908.52 and 68,887.96 is: 95,011.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,890.28 : 141,908.52 = 68,887.96 : x
  2. Step 2: Convert to fraction form
    102,890.28/141,908.52 = 68,887.96/x
  3. Step 3: Cross multiply
    102,890.28x = 141,908.52 × 68,887.96
  4. Step 4: Simplify right side
    102,890.28x = 9,775,788,449.42
  5. Step 5: Solve for x
    x = 9,775,788,449.42/102,890.28
  6. Step 6: Final answer
    x = 95,011.78

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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.