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Finding the Fourth Proportional to 120,093.36, 165,728.84 and 66,378.36

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Solution

The fourth proportional to 120,093.36, 165,728.84 and 66,378.36 is: 91,602.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,093.36 : 165,728.84 = 66,378.36 : x
  2. Step 2: Convert to fraction form
    120,093.36/165,728.84 = 66,378.36/x
  3. Step 3: Cross multiply
    120,093.36x = 165,728.84 × 66,378.36
  4. Step 4: Simplify right side
    120,093.36x = 11,000,808,272.01
  5. Step 5: Solve for x
    x = 11,000,808,272.01/120,093.36
  6. Step 6: Final answer
    x = 91,602.14

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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.