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Finding the Fourth Proportional to 133,422.30, 200,133.45 and 39,915.90

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Solution

The fourth proportional to 133,422.30, 200,133.45 and 39,915.90 is: 59,873.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,422.30 : 200,133.45 = 39,915.90 : x
  2. Step 2: Convert to fraction form
    133,422.30/200,133.45 = 39,915.90/x
  3. Step 3: Cross multiply
    133,422.30x = 200,133.45 × 39,915.90
  4. Step 4: Simplify right side
    133,422.30x = 7,988,506,776.86
  5. Step 5: Solve for x
    x = 7,988,506,776.86/133,422.30
  6. Step 6: Final answer
    x = 59,873.85

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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.