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Finding the Fourth Proportional to 172,179.84, 258,269.76 and 61,294.08

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Solution

The fourth proportional to 172,179.84, 258,269.76 and 61,294.08 is: 91,941.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,179.84 : 258,269.76 = 61,294.08 : x
  2. Step 2: Convert to fraction form
    172,179.84/258,269.76 = 61,294.08/x
  3. Step 3: Cross multiply
    172,179.84x = 258,269.76 × 61,294.08
  4. Step 4: Simplify right side
    172,179.84x = 15,830,407,331.02
  5. Step 5: Solve for x
    x = 15,830,407,331.02/172,179.84
  6. Step 6: Final answer
    x = 91,941.12

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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.