Home / 172,739.20-238,374.48-105,671.20

Finding the Fourth Proportional to 172,739.20, 238,374.48 and 105,671.20

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Solution

The fourth proportional to 172,739.20, 238,374.48 and 105,671.20 is: 145,822.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,739.20 : 238,374.48 = 105,671.20 : x
  2. Step 2: Convert to fraction form
    172,739.20/238,374.48 = 105,671.20/x
  3. Step 3: Cross multiply
    172,739.20x = 238,374.48 × 105,671.20
  4. Step 4: Simplify right side
    172,739.20x = 25,189,317,350.98
  5. Step 5: Solve for x
    x = 25,189,317,350.98/172,739.20
  6. Step 6: Final answer
    x = 145,822.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.