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Finding the Fourth Proportional to 143,946.88, 215,948 and 55,193.46

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Solution

The fourth proportional to 143,946.88, 215,948 and 55,193.46 is: 82,800.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,946.88 : 215,948 = 55,193.46 : x
  2. Step 2: Convert to fraction form
    143,946.88/215,948 = 55,193.46/x
  3. Step 3: Cross multiply
    143,946.88x = 215,948 × 55,193.46
  4. Step 4: Simplify right side
    143,946.88x = 11,918,917,300.08
  5. Step 5: Solve for x
    x = 11,918,917,300.08/143,946.88
  6. Step 6: Final answer
    x = 82,800.80

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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.