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Finding the Fourth Proportional to 131,027.60, 196,541.40 and 86,704.40

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Solution

The fourth proportional to 131,027.60, 196,541.40 and 86,704.40 is: 130,056.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,027.60 : 196,541.40 = 86,704.40 : x
  2. Step 2: Convert to fraction form
    131,027.60/196,541.40 = 86,704.40/x
  3. Step 3: Cross multiply
    131,027.60x = 196,541.40 × 86,704.40
  4. Step 4: Simplify right side
    131,027.60x = 17,041,004,162.16
  5. Step 5: Solve for x
    x = 17,041,004,162.16/131,027.60
  6. Step 6: Final answer
    x = 130,056.60

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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.