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Finding the Fourth Proportional to 157,172.46, 216,730.26 and 116,819.88

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Solution

The fourth proportional to 157,172.46, 216,730.26 and 116,819.88 is: 161,086.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,172.46 : 216,730.26 = 116,819.88 : x
  2. Step 2: Convert to fraction form
    157,172.46/216,730.26 = 116,819.88/x
  3. Step 3: Cross multiply
    157,172.46x = 216,730.26 × 116,819.88
  4. Step 4: Simplify right side
    157,172.46x = 25,318,402,965.57
  5. Step 5: Solve for x
    x = 25,318,402,965.57/157,172.46
  6. Step 6: Final answer
    x = 161,086.76

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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.