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Finding the Fourth Proportional to 172,749.44, 259,165.13 and 54,420.45

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Solution

The fourth proportional to 172,749.44, 259,165.13 and 54,420.45 is: 81,643.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,749.44 : 259,165.13 = 54,420.45 : x
  2. Step 2: Convert to fraction form
    172,749.44/259,165.13 = 54,420.45/x
  3. Step 3: Cross multiply
    172,749.44x = 259,165.13 × 54,420.45
  4. Step 4: Simplify right side
    172,749.44x = 14,103,882,726.81
  5. Step 5: Solve for x
    x = 14,103,882,726.81/172,749.44
  6. Step 6: Final answer
    x = 81,643.58

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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.