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Finding the Fourth Proportional to 131,889.89, 182,015.75 and 74,527.76

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Solution

The fourth proportional to 131,889.89, 182,015.75 and 74,527.76 is: 102,852.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,889.89 : 182,015.75 = 74,527.76 : x
  2. Step 2: Convert to fraction form
    131,889.89/182,015.75 = 74,527.76/x
  3. Step 3: Cross multiply
    131,889.89x = 182,015.75 × 74,527.76
  4. Step 4: Simplify right side
    131,889.89x = 13,565,224,849.50
  5. Step 5: Solve for x
    x = 13,565,224,849.50/131,889.89
  6. Step 6: Final answer
    x = 102,852.65

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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.