Home / 117,123.84-161,635.50-66,147.30

Finding the Fourth Proportional to 117,123.84, 161,635.50 and 66,147.30

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Solution

The fourth proportional to 117,123.84, 161,635.50 and 66,147.30 is: 91,285.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,123.84 : 161,635.50 = 66,147.30 : x
  2. Step 2: Convert to fraction form
    117,123.84/161,635.50 = 66,147.30/x
  3. Step 3: Cross multiply
    117,123.84x = 161,635.50 × 66,147.30
  4. Step 4: Simplify right side
    117,123.84x = 10,691,751,909.15
  5. Step 5: Solve for x
    x = 10,691,751,909.15/117,123.84
  6. Step 6: Final answer
    x = 91,285.87

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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.