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Finding the Fourth Proportional to 159,108.71, 219,515.39 and 98,657.60

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Solution

The fourth proportional to 159,108.71, 219,515.39 and 98,657.60 is: 136,113.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,108.71 : 219,515.39 = 98,657.60 : x
  2. Step 2: Convert to fraction form
    159,108.71/219,515.39 = 98,657.60/x
  3. Step 3: Cross multiply
    159,108.71x = 219,515.39 × 98,657.60
  4. Step 4: Simplify right side
    159,108.71x = 21,656,861,595.96
  5. Step 5: Solve for x
    x = 21,656,861,595.96/159,108.71
  6. Step 6: Final answer
    x = 136,113.61

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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.