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Finding the Fourth Proportional to 120,680.60, 165,948.74 and 104,737.37

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Solution

The fourth proportional to 120,680.60, 165,948.74 and 104,737.37 is: 144,025.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,680.60 : 165,948.74 = 104,737.37 : x
  2. Step 2: Convert to fraction form
    120,680.60/165,948.74 = 104,737.37/x
  3. Step 3: Cross multiply
    120,680.60x = 165,948.74 × 104,737.37
  4. Step 4: Simplify right side
    120,680.60x = 17,381,033,228.98
  5. Step 5: Solve for x
    x = 17,381,033,228.98/120,680.60
  6. Step 6: Final answer
    x = 144,025.09

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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.