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Finding the Fourth Proportional to 143,896.40, 215,941.80 and 93,854.60

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Solution

The fourth proportional to 143,896.40, 215,941.80 and 93,854.60 is: 140,845.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,896.40 : 215,941.80 = 93,854.60 : x
  2. Step 2: Convert to fraction form
    143,896.40/215,941.80 = 93,854.60/x
  3. Step 3: Cross multiply
    143,896.40x = 215,941.80 × 93,854.60
  4. Step 4: Simplify right side
    143,896.40x = 20,267,131,262.28
  5. Step 5: Solve for x
    x = 20,267,131,262.28/143,896.40
  6. Step 6: Final answer
    x = 140,845.30

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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.