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Finding the Fourth Proportional to 117,474.76, 162,123.20 and 66,487.56

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Solution

The fourth proportional to 117,474.76, 162,123.20 and 66,487.56 is: 91,757.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,474.76 : 162,123.20 = 66,487.56 : x
  2. Step 2: Convert to fraction form
    117,474.76/162,123.20 = 66,487.56/x
  3. Step 3: Cross multiply
    117,474.76x = 162,123.20 × 66,487.56
  4. Step 4: Simplify right side
    117,474.76x = 10,779,175,987.39
  5. Step 5: Solve for x
    x = 10,779,175,987.39/117,474.76
  6. Step 6: Final answer
    x = 91,757.38

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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.