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Finding the Fourth Proportional to 172,677.59, 259,051.42 and 54,321.40

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Solution

The fourth proportional to 172,677.59, 259,051.42 and 54,321.40 is: 81,493.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,677.59 : 259,051.42 = 54,321.40 : x
  2. Step 2: Convert to fraction form
    172,677.59/259,051.42 = 54,321.40/x
  3. Step 3: Cross multiply
    172,677.59x = 259,051.42 × 54,321.40
  4. Step 4: Simplify right side
    172,677.59x = 14,072,035,534.78
  5. Step 5: Solve for x
    x = 14,072,035,534.78/172,677.59
  6. Step 6: Final answer
    x = 81,493.12

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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.