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Finding the Fourth Proportional to 169,942.60, 255,059.70 and 75,318.40

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Solution

The fourth proportional to 169,942.60, 255,059.70 and 75,318.40 is: 113,042.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,942.60 : 255,059.70 = 75,318.40 : x
  2. Step 2: Convert to fraction form
    169,942.60/255,059.70 = 75,318.40/x
  3. Step 3: Cross multiply
    169,942.60x = 255,059.70 × 75,318.40
  4. Step 4: Simplify right side
    169,942.60x = 19,210,688,508.48
  5. Step 5: Solve for x
    x = 19,210,688,508.48/169,942.60
  6. Step 6: Final answer
    x = 113,042.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.