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Finding the Fourth Proportional to 133,990.83, 200,990.70 and 67,394.61

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Solution

The fourth proportional to 133,990.83, 200,990.70 and 67,394.61 is: 101,094.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,990.83 : 200,990.70 = 67,394.61 : x
  2. Step 2: Convert to fraction form
    133,990.83/200,990.70 = 67,394.61/x
  3. Step 3: Cross multiply
    133,990.83x = 200,990.70 × 67,394.61
  4. Step 4: Simplify right side
    133,990.83x = 13,545,689,840.13
  5. Step 5: Solve for x
    x = 13,545,689,840.13/133,990.83
  6. Step 6: Final answer
    x = 101,094.16

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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.