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Finding the Fourth Proportional to 185,970.62, 279,074.74 and 67,630.70

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Solution

The fourth proportional to 185,970.62, 279,074.74 and 67,630.70 is: 101,489.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,970.62 : 279,074.74 = 67,630.70 : x
  2. Step 2: Convert to fraction form
    185,970.62/279,074.74 = 67,630.70/x
  3. Step 3: Cross multiply
    185,970.62x = 279,074.74 × 67,630.70
  4. Step 4: Simplify right side
    185,970.62x = 18,874,020,018.52
  5. Step 5: Solve for x
    x = 18,874,020,018.52/185,970.62
  6. Step 6: Final answer
    x = 101,489.26

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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.