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Finding the Fourth Proportional to 250,142.68, 345,200.70 and 136,975.96

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Solution

The fourth proportional to 250,142.68, 345,200.70 and 136,975.96 is: 189,028.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,142.68 : 345,200.70 = 136,975.96 : x
  2. Step 2: Convert to fraction form
    250,142.68/345,200.70 = 136,975.96/x
  3. Step 3: Cross multiply
    250,142.68x = 345,200.70 × 136,975.96
  4. Step 4: Simplify right side
    250,142.68x = 47,284,197,275.17
  5. Step 5: Solve for x
    x = 47,284,197,275.17/250,142.68
  6. Step 6: Final answer
    x = 189,028.91

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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.