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Finding the Fourth Proportional to 120,681.60, 165,950.11 and 104,738.37

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Solution

The fourth proportional to 120,681.60, 165,950.11 and 104,738.37 is: 144,026.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,681.60 : 165,950.11 = 104,738.37 : x
  2. Step 2: Convert to fraction form
    120,681.60/165,950.11 = 104,738.37/x
  3. Step 3: Cross multiply
    120,681.60x = 165,950.11 × 104,738.37
  4. Step 4: Simplify right side
    120,681.60x = 17,381,344,022.72
  5. Step 5: Solve for x
    x = 17,381,344,022.72/120,681.60
  6. Step 6: Final answer
    x = 144,026.46

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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.