Home / 123,419.28-170,318.58-66,830.67

Finding the Fourth Proportional to 123,419.28, 170,318.58 and 66,830.67

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Solution

The fourth proportional to 123,419.28, 170,318.58 and 66,830.67 is: 92,226.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,419.28 : 170,318.58 = 66,830.67 : x
  2. Step 2: Convert to fraction form
    123,419.28/170,318.58 = 66,830.67/x
  3. Step 3: Cross multiply
    123,419.28x = 170,318.58 × 66,830.67
  4. Step 4: Simplify right side
    123,419.28x = 11,382,504,814.85
  5. Step 5: Solve for x
    x = 11,382,504,814.85/123,419.28
  6. Step 6: Final answer
    x = 92,226.31

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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.