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Finding the Fourth Proportional to 115,054, 172,331.72 and 55,765.64

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Solution

The fourth proportional to 115,054, 172,331.72 and 55,765.64 is: 83,527.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,054 : 172,331.72 = 55,765.64 : x
  2. Step 2: Convert to fraction form
    115,054/172,331.72 = 55,765.64/x
  3. Step 3: Cross multiply
    115,054x = 172,331.72 × 55,765.64
  4. Step 4: Simplify right side
    115,054x = 9,610,188,658.10
  5. Step 5: Solve for x
    x = 9,610,188,658.10/115,054
  6. Step 6: Final answer
    x = 83,527.64

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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.