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Finding the Fourth Proportional to 122,370.79, 168,902.73 and 83,624.32

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Solution

The fourth proportional to 122,370.79, 168,902.73 and 83,624.32 is: 115,422.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,370.79 : 168,902.73 = 83,624.32 : x
  2. Step 2: Convert to fraction form
    122,370.79/168,902.73 = 83,624.32/x
  3. Step 3: Cross multiply
    122,370.79x = 168,902.73 × 83,624.32
  4. Step 4: Simplify right side
    122,370.79x = 14,124,375,942.39
  5. Step 5: Solve for x
    x = 14,124,375,942.39/122,370.79
  6. Step 6: Final answer
    x = 115,422.77

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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.