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Finding the Fourth Proportional to 137,593.79, 189,798.84 and 86,525.72

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Solution

The fourth proportional to 137,593.79, 189,798.84 and 86,525.72 is: 119,354.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,593.79 : 189,798.84 = 86,525.72 : x
  2. Step 2: Convert to fraction form
    137,593.79/189,798.84 = 86,525.72/x
  3. Step 3: Cross multiply
    137,593.79x = 189,798.84 × 86,525.72
  4. Step 4: Simplify right side
    137,593.79x = 16,422,481,286.16
  5. Step 5: Solve for x
    x = 16,422,481,286.16/137,593.79
  6. Step 6: Final answer
    x = 119,354.81

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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.