Home / 189,404.43-261,384.39-103,368.12

Finding the Fourth Proportional to 189,404.43, 261,384.39 and 103,368.12

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Solution

The fourth proportional to 189,404.43, 261,384.39 and 103,368.12 is: 142,651.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,404.43 : 261,384.39 = 103,368.12 : x
  2. Step 2: Convert to fraction form
    189,404.43/261,384.39 = 103,368.12/x
  3. Step 3: Cross multiply
    189,404.43x = 261,384.39 × 103,368.12
  4. Step 4: Simplify right side
    189,404.43x = 27,018,812,991.65
  5. Step 5: Solve for x
    x = 27,018,812,991.65/189,404.43
  6. Step 6: Final answer
    x = 142,651.43

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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.