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Finding the Fourth Proportional to 172,830.51, 259,291.13 and 54,505.71

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Solution

The fourth proportional to 172,830.51, 259,291.13 and 54,505.71 is: 81,772.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,830.51 : 259,291.13 = 54,505.71 : x
  2. Step 2: Convert to fraction form
    172,830.51/259,291.13 = 54,505.71/x
  3. Step 3: Cross multiply
    172,830.51x = 259,291.13 × 54,505.71
  4. Step 4: Simplify right side
    172,830.51x = 14,132,846,864.82
  5. Step 5: Solve for x
    x = 14,132,846,864.82/172,830.51
  6. Step 6: Final answer
    x = 81,772.87

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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.