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Finding the Fourth Proportional to 250,071.44, 375,140.10 and 81,532.58

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Solution

The fourth proportional to 250,071.44, 375,140.10 and 81,532.58 is: 122,309.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,071.44 : 375,140.10 = 81,532.58 : x
  2. Step 2: Convert to fraction form
    250,071.44/375,140.10 = 81,532.58/x
  3. Step 3: Cross multiply
    250,071.44x = 375,140.10 × 81,532.58
  4. Step 4: Simplify right side
    250,071.44x = 30,586,140,214.46
  5. Step 5: Solve for x
    x = 30,586,140,214.46/250,071.44
  6. Step 6: Final answer
    x = 122,309.61

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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.