Home / 189,711.75-261,799.05-103,668.85

Finding the Fourth Proportional to 189,711.75, 261,799.05 and 103,668.85

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Solution

The fourth proportional to 189,711.75, 261,799.05 and 103,668.85 is: 143,061.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,711.75 : 261,799.05 = 103,668.85 : x
  2. Step 2: Convert to fraction form
    189,711.75/261,799.05 = 103,668.85/x
  3. Step 3: Cross multiply
    189,711.75x = 261,799.05 × 103,668.85
  4. Step 4: Simplify right side
    189,711.75x = 27,140,406,444.59
  5. Step 5: Solve for x
    x = 27,140,406,444.59/189,711.75
  6. Step 6: Final answer
    x = 143,061.28

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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.