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Finding the Fourth Proportional to 109,260, 150,776.32 and 60,861.60

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Solution

The fourth proportional to 109,260, 150,776.32 and 60,861.60 is: 83,987.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,260 : 150,776.32 = 60,861.60 : x
  2. Step 2: Convert to fraction form
    109,260/150,776.32 = 60,861.60/x
  3. Step 3: Cross multiply
    109,260x = 150,776.32 × 60,861.60
  4. Step 4: Simplify right side
    109,260x = 9,176,488,077.31
  5. Step 5: Solve for x
    x = 9,176,488,077.31/109,260
  6. Step 6: Final answer
    x = 83,987.63

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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.