Home / 120,142.08-165,794.94-66,426.84

Finding the Fourth Proportional to 120,142.08, 165,794.94 and 66,426.84

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Solution

The fourth proportional to 120,142.08, 165,794.94 and 66,426.84 is: 91,668.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,142.08 : 165,794.94 = 66,426.84 : x
  2. Step 2: Convert to fraction form
    120,142.08/165,794.94 = 66,426.84/x
  3. Step 3: Cross multiply
    120,142.08x = 165,794.94 × 66,426.84
  4. Step 4: Simplify right side
    120,142.08x = 11,013,233,952.19
  5. Step 5: Solve for x
    x = 11,013,233,952.19/120,142.08
  6. Step 6: Final answer
    x = 91,668.41

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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.