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Finding the Fourth Proportional to 133,391.70, 200,019.15 and 39,885.30

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Solution

The fourth proportional to 133,391.70, 200,019.15 and 39,885.30 is: 59,807.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,391.70 : 200,019.15 = 39,885.30 : x
  2. Step 2: Convert to fraction form
    133,391.70/200,019.15 = 39,885.30/x
  3. Step 3: Cross multiply
    133,391.70x = 200,019.15 × 39,885.30
  4. Step 4: Simplify right side
    133,391.70x = 7,977,823,803.50
  5. Step 5: Solve for x
    x = 7,977,823,803.50/133,391.70
  6. Step 6: Final answer
    x = 59,807.50

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1.5x scale

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.