Home / 122,311.77-168,633.99-79,215.12

Finding the Fourth Proportional to 122,311.77, 168,633.99 and 79,215.12

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Solution

The fourth proportional to 122,311.77, 168,633.99 and 79,215.12 is: 109,215.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,311.77 : 168,633.99 = 79,215.12 : x
  2. Step 2: Convert to fraction form
    122,311.77/168,633.99 = 79,215.12/x
  3. Step 3: Cross multiply
    122,311.77x = 168,633.99 × 79,215.12
  4. Step 4: Simplify right side
    122,311.77x = 13,358,361,753.93
  5. Step 5: Solve for x
    x = 13,358,361,753.93/122,311.77
  6. Step 6: Final answer
    x = 109,215.67

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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.