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Finding the Fourth Proportional to 112,768.80, 168,715.80 and 73,402.80

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Solution

The fourth proportional to 112,768.80, 168,715.80 and 73,402.80 is: 109,819.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,768.80 : 168,715.80 = 73,402.80 : x
  2. Step 2: Convert to fraction form
    112,768.80/168,715.80 = 73,402.80/x
  3. Step 3: Cross multiply
    112,768.80x = 168,715.80 × 73,402.80
  4. Step 4: Simplify right side
    112,768.80x = 12,384,212,124.24
  5. Step 5: Solve for x
    x = 12,384,212,124.24/112,768.80
  6. Step 6: Final answer
    x = 109,819.49

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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.