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Finding the Fourth Proportional to 131,467.80, 197,201.70 and 64,939.80

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Solution

The fourth proportional to 131,467.80, 197,201.70 and 64,939.80 is: 97,409.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,467.80 : 197,201.70 = 64,939.80 : x
  2. Step 2: Convert to fraction form
    131,467.80/197,201.70 = 64,939.80/x
  3. Step 3: Cross multiply
    131,467.80x = 197,201.70 × 64,939.80
  4. Step 4: Simplify right side
    131,467.80x = 12,806,238,957.66
  5. Step 5: Solve for x
    x = 12,806,238,957.66/131,467.80
  6. Step 6: Final answer
    x = 97,409.70

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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.