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Finding the Fourth Proportional to 197,539.50, 272,604.51 and 108,115.50

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Solution

The fourth proportional to 197,539.50, 272,604.51 and 108,115.50 is: 149,199.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,539.50 : 272,604.51 = 108,115.50 : x
  2. Step 2: Convert to fraction form
    197,539.50/272,604.51 = 108,115.50/x
  3. Step 3: Cross multiply
    197,539.50x = 272,604.51 × 108,115.50
  4. Step 4: Simplify right side
    197,539.50x = 29,472,772,900.91
  5. Step 5: Solve for x
    x = 29,472,772,900.91/197,539.50
  6. Step 6: Final answer
    x = 149,199.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.