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Finding the Fourth Proportional to 172,444.56, 258,513.12 and 67,239.60

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Solution

The fourth proportional to 172,444.56, 258,513.12 and 67,239.60 is: 100,799.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,444.56 : 258,513.12 = 67,239.60 : x
  2. Step 2: Convert to fraction form
    172,444.56/258,513.12 = 67,239.60/x
  3. Step 3: Cross multiply
    172,444.56x = 258,513.12 × 67,239.60
  4. Step 4: Simplify right side
    172,444.56x = 17,382,318,783.55
  5. Step 5: Solve for x
    x = 17,382,318,783.55/172,444.56
  6. Step 6: Final answer
    x = 100,799.46

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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.