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Finding the Fourth Proportional to 131,472.20, 197,100.30 and 56,649.80

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Solution

The fourth proportional to 131,472.20, 197,100.30 and 56,649.80 is: 84,928.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,472.20 : 197,100.30 = 56,649.80 : x
  2. Step 2: Convert to fraction form
    131,472.20/197,100.30 = 56,649.80/x
  3. Step 3: Cross multiply
    131,472.20x = 197,100.30 × 56,649.80
  4. Step 4: Simplify right side
    131,472.20x = 11,165,692,574.94
  5. Step 5: Solve for x
    x = 11,165,692,574.94/131,472.20
  6. Step 6: Final answer
    x = 84,928.16

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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.