Home / 189,719.62-261,816.83-103,683.93

Finding the Fourth Proportional to 189,719.62, 261,816.83 and 103,683.93

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Solution

The fourth proportional to 189,719.62, 261,816.83 and 103,683.93 is: 143,085.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,719.62 : 261,816.83 = 103,683.93 : x
  2. Step 2: Convert to fraction form
    189,719.62/261,816.83 = 103,683.93/x
  3. Step 3: Cross multiply
    189,719.62x = 261,816.83 × 103,683.93
  4. Step 4: Simplify right side
    189,719.62x = 27,146,196,763.12
  5. Step 5: Solve for x
    x = 27,146,196,763.12/189,719.62
  6. Step 6: Final answer
    x = 143,085.87

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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.