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Finding the Fourth Proportional to 105,493.58, 158,192.50 and 45,493.68

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Solution

The fourth proportional to 105,493.58, 158,192.50 and 45,493.68 is: 68,219.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,493.58 : 158,192.50 = 45,493.68 : x
  2. Step 2: Convert to fraction form
    105,493.58/158,192.50 = 45,493.68/x
  3. Step 3: Cross multiply
    105,493.58x = 158,192.50 × 45,493.68
  4. Step 4: Simplify right side
    105,493.58x = 7,196,758,933.06
  5. Step 5: Solve for x
    x = 7,196,758,933.06/105,493.58
  6. Step 6: Final answer
    x = 68,219.88

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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.