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Finding the Fourth Proportional to 131,646.70, 197,470.05 and 72,664.30

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Solution

The fourth proportional to 131,646.70, 197,470.05 and 72,664.30 is: 108,996.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,646.70 : 197,470.05 = 72,664.30 : x
  2. Step 2: Convert to fraction form
    131,646.70/197,470.05 = 72,664.30/x
  3. Step 3: Cross multiply
    131,646.70x = 197,470.05 × 72,664.30
  4. Step 4: Simplify right side
    131,646.70x = 14,349,022,954.22
  5. Step 5: Solve for x
    x = 14,349,022,954.22/131,646.70
  6. Step 6: Final answer
    x = 108,996.45

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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.