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Finding the Fourth Proportional to 172,745.55, 259,127.55 and 54,426.15

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Solution

The fourth proportional to 172,745.55, 259,127.55 and 54,426.15 is: 81,642.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,745.55 : 259,127.55 = 54,426.15 : x
  2. Step 2: Convert to fraction form
    172,745.55/259,127.55 = 54,426.15/x
  3. Step 3: Cross multiply
    172,745.55x = 259,127.55 × 54,426.15
  4. Step 4: Simplify right side
    172,745.55x = 14,103,314,905.43
  5. Step 5: Solve for x
    x = 14,103,314,905.43/172,745.55
  6. Step 6: Final answer
    x = 81,642.13

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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.