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Finding the Fourth Proportional to 159,347.35, 219,890.99 and 87,713.38

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Solution

The fourth proportional to 159,347.35, 219,890.99 and 87,713.38 is: 121,039.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,347.35 : 219,890.99 = 87,713.38 : x
  2. Step 2: Convert to fraction form
    159,347.35/219,890.99 = 87,713.38/x
  3. Step 3: Cross multiply
    159,347.35x = 219,890.99 × 87,713.38
  4. Step 4: Simplify right side
    159,347.35x = 19,287,381,634.00
  5. Step 5: Solve for x
    x = 19,287,381,634.00/159,347.35
  6. Step 6: Final answer
    x = 121,039.87

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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.