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Finding the Fourth Proportional to 122,302.76, 168,621.57 and 79,206.10

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Solution

The fourth proportional to 122,302.76, 168,621.57 and 79,206.10 is: 109,203.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,302.76 : 168,621.57 = 79,206.10 : x
  2. Step 2: Convert to fraction form
    122,302.76/168,621.57 = 79,206.10/x
  3. Step 3: Cross multiply
    122,302.76x = 168,621.57 × 79,206.10
  4. Step 4: Simplify right side
    122,302.76x = 13,355,857,685.29
  5. Step 5: Solve for x
    x = 13,355,857,685.29/122,302.76
  6. Step 6: Final answer
    x = 109,203.24

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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.