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Finding the Fourth Proportional to 122,174.74, 168,518.91 and 71,873.74

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Solution

The fourth proportional to 122,174.74, 168,518.91 and 71,873.74 is: 99,137.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,174.74 : 168,518.91 = 71,873.74 : x
  2. Step 2: Convert to fraction form
    122,174.74/168,518.91 = 71,873.74/x
  3. Step 3: Cross multiply
    122,174.74x = 168,518.91 × 71,873.74
  4. Step 4: Simplify right side
    122,174.74x = 12,112,084,322.42
  5. Step 5: Solve for x
    x = 12,112,084,322.42/122,174.74
  6. Step 6: Final answer
    x = 99,137.39

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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.