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Finding the Fourth Proportional to 172,392.70, 258,005.85 and 172,392.70

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Solution

The fourth proportional to 172,392.70, 258,005.85 and 172,392.70 is: 258,005.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,392.70 : 258,005.85 = 172,392.70 : x
  2. Step 2: Convert to fraction form
    172,392.70/258,005.85 = 172,392.70/x
  3. Step 3: Cross multiply
    172,392.70x = 258,005.85 × 172,392.70
  4. Step 4: Simplify right side
    172,392.70x = 44,478,325,097.30
  5. Step 5: Solve for x
    x = 44,478,325,097.30/172,392.70
  6. Step 6: Final answer
    x = 258,005.85

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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.