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Finding the Fourth Proportional to 120,242.54, 165,933.96 and 66,526.58

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Solution

The fourth proportional to 120,242.54, 165,933.96 and 66,526.58 is: 91,806.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,242.54 : 165,933.96 = 66,526.58 : x
  2. Step 2: Convert to fraction form
    120,242.54/165,933.96 = 66,526.58/x
  3. Step 3: Cross multiply
    120,242.54x = 165,933.96 × 66,526.58
  4. Step 4: Simplify right side
    120,242.54x = 11,039,018,864.66
  5. Step 5: Solve for x
    x = 11,039,018,864.66/120,242.54
  6. Step 6: Final answer
    x = 91,806.27

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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.