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Finding the Fourth Proportional to 131,688.56, 197,357.88 and 75,555.56

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Solution

The fourth proportional to 131,688.56, 197,357.88 and 75,555.56 is: 113,232.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,688.56 : 197,357.88 = 75,555.56 : x
  2. Step 2: Convert to fraction form
    131,688.56/197,357.88 = 75,555.56/x
  3. Step 3: Cross multiply
    131,688.56x = 197,357.88 × 75,555.56
  4. Step 4: Simplify right side
    131,688.56x = 14,911,485,143.81
  5. Step 5: Solve for x
    x = 14,911,485,143.81/131,688.56
  6. Step 6: Final answer
    x = 113,232.96

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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.