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Finding the Fourth Proportional to 158,874.57, 238,366.46 and 99,640.89

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Solution

The fourth proportional to 158,874.57, 238,366.46 and 99,640.89 is: 149,495.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,874.57 : 238,366.46 = 99,640.89 : x
  2. Step 2: Convert to fraction form
    158,874.57/238,366.46 = 99,640.89/x
  3. Step 3: Cross multiply
    158,874.57x = 238,366.46 × 99,640.89
  4. Step 4: Simplify right side
    158,874.57x = 23,751,046,220.55
  5. Step 5: Solve for x
    x = 23,751,046,220.55/158,874.57
  6. Step 6: Final answer
    x = 149,495.58

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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.