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Finding the Fourth Proportional to 172,693.86, 259,217.46 and 142,612.32

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Solution

The fourth proportional to 172,693.86, 259,217.46 and 142,612.32 is: 214,064.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,693.86 : 259,217.46 = 142,612.32 : x
  2. Step 2: Convert to fraction form
    172,693.86/259,217.46 = 142,612.32/x
  3. Step 3: Cross multiply
    172,693.86x = 259,217.46 × 142,612.32
  4. Step 4: Simplify right side
    172,693.86x = 36,967,603,355.11
  5. Step 5: Solve for x
    x = 36,967,603,355.11/172,693.86
  6. Step 6: Final answer
    x = 214,064.38

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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.