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Finding the Fourth Proportional to 159,262.90, 219,777.30 and 87,636.22

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Solution

The fourth proportional to 159,262.90, 219,777.30 and 87,636.22 is: 120,934.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,262.90 : 219,777.30 = 87,636.22 : x
  2. Step 2: Convert to fraction form
    159,262.90/219,777.30 = 87,636.22/x
  3. Step 3: Cross multiply
    159,262.90x = 219,777.30 × 87,636.22
  4. Step 4: Simplify right side
    159,262.90x = 19,260,451,813.81
  5. Step 5: Solve for x
    x = 19,260,451,813.81/159,262.90
  6. Step 6: Final answer
    x = 120,934.96

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1.5x scale

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.