Home / 120,333.69-166,061.79-66,619.53

Finding the Fourth Proportional to 120,333.69, 166,061.79 and 66,619.53

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Solution

The fourth proportional to 120,333.69, 166,061.79 and 66,619.53 is: 91,935.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,333.69 : 166,061.79 = 66,619.53 : x
  2. Step 2: Convert to fraction form
    120,333.69/166,061.79 = 66,619.53/x
  3. Step 3: Cross multiply
    120,333.69x = 166,061.79 × 66,619.53
  4. Step 4: Simplify right side
    120,333.69x = 11,062,958,400.76
  5. Step 5: Solve for x
    x = 11,062,958,400.76/120,333.69
  6. Step 6: Final answer
    x = 91,935.67

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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.