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Finding the Fourth Proportional to 131,509.20, 197,134.20 and 64,959.60

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Solution

The fourth proportional to 131,509.20, 197,134.20 and 64,959.60 is: 97,375.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,509.20 : 197,134.20 = 64,959.60 : x
  2. Step 2: Convert to fraction form
    131,509.20/197,134.20 = 64,959.60/x
  3. Step 3: Cross multiply
    131,509.20x = 197,134.20 × 64,959.60
  4. Step 4: Simplify right side
    131,509.20x = 12,805,758,778.32
  5. Step 5: Solve for x
    x = 12,805,758,778.32/131,509.20
  6. Step 6: Final answer
    x = 97,375.38

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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.