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Finding the Fourth Proportional to 131,401.80, 197,102.70 and 52,572.60

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Solution

The fourth proportional to 131,401.80, 197,102.70 and 52,572.60 is: 78,858.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,401.80 : 197,102.70 = 52,572.60 : x
  2. Step 2: Convert to fraction form
    131,401.80/197,102.70 = 52,572.60/x
  3. Step 3: Cross multiply
    131,401.80x = 197,102.70 × 52,572.60
  4. Step 4: Simplify right side
    131,401.80x = 10,362,201,406.02
  5. Step 5: Solve for x
    x = 10,362,201,406.02/131,401.80
  6. Step 6: Final answer
    x = 78,858.90

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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.