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Finding the Fourth Proportional to 131,402.40, 197,060.40 and 48,285.60

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Solution

The fourth proportional to 131,402.40, 197,060.40 and 48,285.60 is: 72,412.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,402.40 : 197,060.40 = 48,285.60 : x
  2. Step 2: Convert to fraction form
    131,402.40/197,060.40 = 48,285.60/x
  3. Step 3: Cross multiply
    131,402.40x = 197,060.40 × 48,285.60
  4. Step 4: Simplify right side
    131,402.40x = 9,515,179,650.24
  5. Step 5: Solve for x
    x = 9,515,179,650.24/131,402.40
  6. Step 6: Final answer
    x = 72,412.53

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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.