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Finding the Fourth Proportional to 109,315.78, 150,860.44 and 60,917.76

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Solution

The fourth proportional to 109,315.78, 150,860.44 and 60,917.76 is: 84,069.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,315.78 : 150,860.44 = 60,917.76 : x
  2. Step 2: Convert to fraction form
    109,315.78/150,860.44 = 60,917.76/x
  3. Step 3: Cross multiply
    109,315.78x = 150,860.44 × 60,917.76
  4. Step 4: Simplify right side
    109,315.78x = 9,190,080,077.41
  5. Step 5: Solve for x
    x = 9,190,080,077.41/109,315.78
  6. Step 6: Final answer
    x = 84,069.11

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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.