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Finding the Fourth Proportional to 131,999.60, 197,999.40 and 84,760.40

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Solution

The fourth proportional to 131,999.60, 197,999.40 and 84,760.40 is: 127,140.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,999.60 : 197,999.40 = 84,760.40 : x
  2. Step 2: Convert to fraction form
    131,999.60/197,999.40 = 84,760.40/x
  3. Step 3: Cross multiply
    131,999.60x = 197,999.40 × 84,760.40
  4. Step 4: Simplify right side
    131,999.60x = 16,782,508,343.76
  5. Step 5: Solve for x
    x = 16,782,508,343.76/131,999.60
  6. Step 6: Final answer
    x = 127,140.60

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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.