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Finding the Fourth Proportional to 120,263.72, 165,965.49 and 74,960.01

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Solution

The fourth proportional to 120,263.72, 165,965.49 and 74,960.01 is: 103,445.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,263.72 : 165,965.49 = 74,960.01 : x
  2. Step 2: Convert to fraction form
    120,263.72/165,965.49 = 74,960.01/x
  3. Step 3: Cross multiply
    120,263.72x = 165,965.49 × 74,960.01
  4. Step 4: Simplify right side
    120,263.72x = 12,440,774,790.05
  5. Step 5: Solve for x
    x = 12,440,774,790.05/120,263.72
  6. Step 6: Final answer
    x = 103,445.79

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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.