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Finding the Fourth Proportional to 189,391.62, 283,693.76 and 89,631.62

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Solution

The fourth proportional to 189,391.62, 283,693.76 and 89,631.62 is: 134,261.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,391.62 : 283,693.76 = 89,631.62 : x
  2. Step 2: Convert to fraction form
    189,391.62/283,693.76 = 89,631.62/x
  3. Step 3: Cross multiply
    189,391.62x = 283,693.76 × 89,631.62
  4. Step 4: Simplify right side
    189,391.62x = 25,427,929,426.06
  5. Step 5: Solve for x
    x = 25,427,929,426.06/189,391.62
  6. Step 6: Final answer
    x = 134,261.11

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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.