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Finding the Fourth Proportional to 143,611.55, 215,096.56 and 104,077.88

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Solution

The fourth proportional to 143,611.55, 215,096.56 and 104,077.88 is: 155,884.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,611.55 : 215,096.56 = 104,077.88 : x
  2. Step 2: Convert to fraction form
    143,611.55/215,096.56 = 104,077.88/x
  3. Step 3: Cross multiply
    143,611.55x = 215,096.56 × 104,077.88
  4. Step 4: Simplify right side
    143,611.55x = 22,386,793,960.09
  5. Step 5: Solve for x
    x = 22,386,793,960.09/143,611.55
  6. Step 6: Final answer
    x = 155,884.36

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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.