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Finding the Fourth Proportional to 120,336.62, 166,057.93 and 65,878.25

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Solution

The fourth proportional to 120,336.62, 166,057.93 and 65,878.25 is: 90,908.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,336.62 : 166,057.93 = 65,878.25 : x
  2. Step 2: Convert to fraction form
    120,336.62/166,057.93 = 65,878.25/x
  3. Step 3: Cross multiply
    120,336.62x = 166,057.93 × 65,878.25
  4. Step 4: Simplify right side
    120,336.62x = 10,939,605,079.08
  5. Step 5: Solve for x
    x = 10,939,605,079.08/120,336.62
  6. Step 6: Final answer
    x = 90,908.36

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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.