Home / 122,385.22-168,385.80-99,208.42

Finding the Fourth Proportional to 122,385.22, 168,385.80 and 99,208.42

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Solution

The fourth proportional to 122,385.22, 168,385.80 and 99,208.42 is: 136,497.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,385.22 : 168,385.80 = 99,208.42 : x
  2. Step 2: Convert to fraction form
    122,385.22/168,385.80 = 99,208.42/x
  3. Step 3: Cross multiply
    122,385.22x = 168,385.80 × 99,208.42
  4. Step 4: Simplify right side
    122,385.22x = 16,705,289,168.44
  5. Step 5: Solve for x
    x = 16,705,289,168.44/122,385.22
  6. Step 6: Final answer
    x = 136,497.60

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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.