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Finding the Fourth Proportional to 159,295.68, 219,826.38 and 87,674.18

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Solution

The fourth proportional to 159,295.68, 219,826.38 and 87,674.18 is: 120,989.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,295.68 : 219,826.38 = 87,674.18 : x
  2. Step 2: Convert to fraction form
    159,295.68/219,826.38 = 87,674.18/x
  3. Step 3: Cross multiply
    159,295.68x = 219,826.38 × 87,674.18
  4. Step 4: Simplify right side
    159,295.68x = 19,273,097,608.87
  5. Step 5: Solve for x
    x = 19,273,097,608.87/159,295.68
  6. Step 6: Final answer
    x = 120,989.46

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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.