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Finding the Fourth Proportional to 120,602.97, 166,429.62 and 66,879.32

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Solution

The fourth proportional to 120,602.97, 166,429.62 and 66,879.32 is: 92,292.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,602.97 : 166,429.62 = 66,879.32 : x
  2. Step 2: Convert to fraction form
    120,602.97/166,429.62 = 66,879.32/x
  3. Step 3: Cross multiply
    120,602.97x = 166,429.62 × 66,879.32
  4. Step 4: Simplify right side
    120,602.97x = 11,130,698,981.31
  5. Step 5: Solve for x
    x = 11,130,698,981.31/120,602.97
  6. Step 6: Final answer
    x = 92,292.08

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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.