Home / 120,081.65-180,122.23-112,774.33

Finding the Fourth Proportional to 120,081.65, 180,122.23 and 112,774.33

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Solution

The fourth proportional to 120,081.65, 180,122.23 and 112,774.33 is: 169,161.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,081.65 : 180,122.23 = 112,774.33 : x
  2. Step 2: Convert to fraction form
    120,081.65/180,122.23 = 112,774.33/x
  3. Step 3: Cross multiply
    120,081.65x = 180,122.23 × 112,774.33
  4. Step 4: Simplify right side
    120,081.65x = 20,313,163,242.48
  5. Step 5: Solve for x
    x = 20,313,163,242.48/120,081.65
  6. Step 6: Final answer
    x = 169,161.27

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1.5x scale

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.