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Finding the Fourth Proportional to 172,774.05, 258,983.52 and 66,133

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Solution

The fourth proportional to 172,774.05, 258,983.52 and 66,133 is: 99,131.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,774.05 : 258,983.52 = 66,133 : x
  2. Step 2: Convert to fraction form
    172,774.05/258,983.52 = 66,133/x
  3. Step 3: Cross multiply
    172,774.05x = 258,983.52 × 66,133
  4. Step 4: Simplify right side
    172,774.05x = 17,127,357,128.16
  5. Step 5: Solve for x
    x = 17,127,357,128.16/172,774.05
  6. Step 6: Final answer
    x = 99,131.54

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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.