Home / 231,712.20-347,574.78-81,931.32

Finding the Fourth Proportional to 231,712.20, 347,574.78 and 81,931.32

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Solution

The fourth proportional to 231,712.20, 347,574.78 and 81,931.32 is: 122,899.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,712.20 : 347,574.78 = 81,931.32 : x
  2. Step 2: Convert to fraction form
    231,712.20/347,574.78 = 81,931.32/x
  3. Step 3: Cross multiply
    231,712.20x = 347,574.78 × 81,931.32
  4. Step 4: Simplify right side
    231,712.20x = 28,477,260,524.11
  5. Step 5: Solve for x
    x = 28,477,260,524.11/231,712.20
  6. Step 6: Final answer
    x = 122,899.27

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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.