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Finding the Fourth Proportional to 159,668.40, 220,344.12 and 88,051.20

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Solution

The fourth proportional to 159,668.40, 220,344.12 and 88,051.20 is: 121,511.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,668.40 : 220,344.12 = 88,051.20 : x
  2. Step 2: Convert to fraction form
    159,668.40/220,344.12 = 88,051.20/x
  3. Step 3: Cross multiply
    159,668.40x = 220,344.12 × 88,051.20
  4. Step 4: Simplify right side
    159,668.40x = 19,401,564,178.94
  5. Step 5: Solve for x
    x = 19,401,564,178.94/159,668.40
  6. Step 6: Final answer
    x = 121,511.61

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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.