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Finding the Fourth Proportional to 159,064.89, 219,513.75 and 86,472.67

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Solution

The fourth proportional to 159,064.89, 219,513.75 and 86,472.67 is: 119,334.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,064.89 : 219,513.75 = 86,472.67 : x
  2. Step 2: Convert to fraction form
    159,064.89/219,513.75 = 86,472.67/x
  3. Step 3: Cross multiply
    159,064.89x = 219,513.75 × 86,472.67
  4. Step 4: Simplify right side
    159,064.89x = 18,981,940,064.21
  5. Step 5: Solve for x
    x = 18,981,940,064.21/159,064.89
  6. Step 6: Final answer
    x = 119,334.57

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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.