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Finding the Fourth Proportional to 143,892.60, 216,033.30 and 91,404.60

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Solution

The fourth proportional to 143,892.60, 216,033.30 and 91,404.60 is: 137,230.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,892.60 : 216,033.30 = 91,404.60 : x
  2. Step 2: Convert to fraction form
    143,892.60/216,033.30 = 91,404.60/x
  3. Step 3: Cross multiply
    143,892.60x = 216,033.30 × 91,404.60
  4. Step 4: Simplify right side
    143,892.60x = 19,746,437,373.18
  5. Step 5: Solve for x
    x = 19,746,437,373.18/143,892.60
  6. Step 6: Final answer
    x = 137,230.39

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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.