Home / 113,233.96-155,992.74-79,178.76

Finding the Fourth Proportional to 113,233.96, 155,992.74 and 79,178.76

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Solution

The fourth proportional to 113,233.96, 155,992.74 and 79,178.76 is: 109,077.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,233.96 : 155,992.74 = 79,178.76 : x
  2. Step 2: Convert to fraction form
    113,233.96/155,992.74 = 79,178.76/x
  3. Step 3: Cross multiply
    113,233.96x = 155,992.74 × 79,178.76
  4. Step 4: Simplify right side
    113,233.96x = 12,351,311,722.20
  5. Step 5: Solve for x
    x = 12,351,311,722.20/113,233.96
  6. Step 6: Final answer
    x = 109,077.80

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1.5x scale

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.