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Finding the Fourth Proportional to 122,384.22, 168,384.42 and 99,207.42

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Solution

The fourth proportional to 122,384.22, 168,384.42 and 99,207.42 is: 136,496.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,384.22 : 168,384.42 = 99,207.42 : x
  2. Step 2: Convert to fraction form
    122,384.22/168,384.42 = 99,207.42/x
  3. Step 3: Cross multiply
    122,384.22x = 168,384.42 × 99,207.42
  4. Step 4: Simplify right side
    122,384.22x = 16,704,983,876.40
  5. Step 5: Solve for x
    x = 16,704,983,876.40/122,384.22
  6. Step 6: Final answer
    x = 136,496.22

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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.