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Finding the Fourth Proportional to 159,653.21, 220,310.15 and 88,031.70

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Solution

The fourth proportional to 159,653.21, 220,310.15 and 88,031.70 is: 121,477.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,653.21 : 220,310.15 = 88,031.70 : x
  2. Step 2: Convert to fraction form
    159,653.21/220,310.15 = 88,031.70/x
  3. Step 3: Cross multiply
    159,653.21x = 220,310.15 × 88,031.70
  4. Step 4: Simplify right side
    159,653.21x = 19,394,276,591.60
  5. Step 5: Solve for x
    x = 19,394,276,591.60/159,653.21
  6. Step 6: Final answer
    x = 121,477.53

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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.