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Finding the Fourth Proportional to 133,428.08, 200,142 and 63,269.12

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Solution

The fourth proportional to 133,428.08, 200,142 and 63,269.12 is: 94,903.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,428.08 : 200,142 = 63,269.12 : x
  2. Step 2: Convert to fraction form
    133,428.08/200,142 = 63,269.12/x
  3. Step 3: Cross multiply
    133,428.08x = 200,142 × 63,269.12
  4. Step 4: Simplify right side
    133,428.08x = 12,662,808,215.04
  5. Step 5: Solve for x
    x = 12,662,808,215.04/133,428.08
  6. Step 6: Final answer
    x = 94,903.62

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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.