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Finding the Fourth Proportional to 115,115.72, 172,673.58 and 55,900.64

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Solution

The fourth proportional to 115,115.72, 172,673.58 and 55,900.64 is: 83,850.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,115.72 : 172,673.58 = 55,900.64 : x
  2. Step 2: Convert to fraction form
    115,115.72/172,673.58 = 55,900.64/x
  3. Step 3: Cross multiply
    115,115.72x = 172,673.58 × 55,900.64
  4. Step 4: Simplify right side
    115,115.72x = 9,652,563,633.09
  5. Step 5: Solve for x
    x = 9,652,563,633.09/115,115.72
  6. Step 6: Final answer
    x = 83,850.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.