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Finding the Fourth Proportional to 172,986.30, 259,487.55 and 54,666.90

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Solution

The fourth proportional to 172,986.30, 259,487.55 and 54,666.90 is: 82,002.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,986.30 : 259,487.55 = 54,666.90 : x
  2. Step 2: Convert to fraction form
    172,986.30/259,487.55 = 54,666.90/x
  3. Step 3: Cross multiply
    172,986.30x = 259,487.55 × 54,666.90
  4. Step 4: Simplify right side
    172,986.30x = 14,185,379,947.10
  5. Step 5: Solve for x
    x = 14,185,379,947.10/172,986.30
  6. Step 6: Final answer
    x = 82,002.91

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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.