Home / 189,837.81-261,981.81-103,801.91

Finding the Fourth Proportional to 189,837.81, 261,981.81 and 103,801.91

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Solution

The fourth proportional to 189,837.81, 261,981.81 and 103,801.91 is: 143,249.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,837.81 : 261,981.81 = 103,801.91 : x
  2. Step 2: Convert to fraction form
    189,837.81/261,981.81 = 103,801.91/x
  3. Step 3: Cross multiply
    189,837.81x = 261,981.81 × 103,801.91
  4. Step 4: Simplify right side
    189,837.81x = 27,194,210,953.35
  5. Step 5: Solve for x
    x = 27,194,210,953.35/189,837.81
  6. Step 6: Final answer
    x = 143,249.71

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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.