Home / 231,821.19-347,690.68-105,431.83

Finding the Fourth Proportional to 231,821.19, 347,690.68 and 105,431.83

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Solution

The fourth proportional to 231,821.19, 347,690.68 and 105,431.83 is: 158,129.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,821.19 : 347,690.68 = 105,431.83 : x
  2. Step 2: Convert to fraction form
    231,821.19/347,690.68 = 105,431.83/x
  3. Step 3: Cross multiply
    231,821.19x = 347,690.68 × 105,431.83
  4. Step 4: Simplify right side
    231,821.19x = 36,657,663,533.54
  5. Step 5: Solve for x
    x = 36,657,663,533.54/231,821.19
  6. Step 6: Final answer
    x = 158,129.05

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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.