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Finding the Fourth Proportional to 131,764.60, 197,661.30 and 127,617.40

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Solution

The fourth proportional to 131,764.60, 197,661.30 and 127,617.40 is: 191,440.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,764.60 : 197,661.30 = 127,617.40 : x
  2. Step 2: Convert to fraction form
    131,764.60/197,661.30 = 127,617.40/x
  3. Step 3: Cross multiply
    131,764.60x = 197,661.30 × 127,617.40
  4. Step 4: Simplify right side
    131,764.60x = 25,225,021,186.62
  5. Step 5: Solve for x
    x = 25,225,021,186.62/131,764.60
  6. Step 6: Final answer
    x = 191,440.05

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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.