Home / 113,216.43-155,968.64-79,161.20

Finding the Fourth Proportional to 113,216.43, 155,968.64 and 79,161.20

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Solution

The fourth proportional to 113,216.43, 155,968.64 and 79,161.20 is: 109,053.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,216.43 : 155,968.64 = 79,161.20 : x
  2. Step 2: Convert to fraction form
    113,216.43/155,968.64 = 79,161.20/x
  3. Step 3: Cross multiply
    113,216.43x = 155,968.64 × 79,161.20
  4. Step 4: Simplify right side
    113,216.43x = 12,346,664,410.86
  5. Step 5: Solve for x
    x = 12,346,664,410.86/113,216.43
  6. Step 6: Final answer
    x = 109,053.64

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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.