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Finding the Fourth Proportional to 120,969.96, 181,434.40 and 36,709.80

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Solution

The fourth proportional to 120,969.96, 181,434.40 and 36,709.80 is: 55,058.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,969.96 : 181,434.40 = 36,709.80 : x
  2. Step 2: Convert to fraction form
    120,969.96/181,434.40 = 36,709.80/x
  3. Step 3: Cross multiply
    120,969.96x = 181,434.40 × 36,709.80
  4. Step 4: Simplify right side
    120,969.96x = 6,660,420,537.12
  5. Step 5: Solve for x
    x = 6,660,420,537.12/120,969.96
  6. Step 6: Final answer
    x = 55,058.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.