Home / 112,805.57-155,719.70-76,019.85

Finding the Fourth Proportional to 112,805.57, 155,719.70 and 76,019.85

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Solution

The fourth proportional to 112,805.57, 155,719.70 and 76,019.85 is: 104,939.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,805.57 : 155,719.70 = 76,019.85 : x
  2. Step 2: Convert to fraction form
    112,805.57/155,719.70 = 76,019.85/x
  3. Step 3: Cross multiply
    112,805.57x = 155,719.70 × 76,019.85
  4. Step 4: Simplify right side
    112,805.57x = 11,837,787,855.95
  5. Step 5: Solve for x
    x = 11,837,787,855.95/112,805.57
  6. Step 6: Final answer
    x = 104,939.75

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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.