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Finding the Fourth Proportional to 120,101.50, 165,740.07 and 67,109.50

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Solution

The fourth proportional to 120,101.50, 165,740.07 and 67,109.50 is: 92,611.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,101.50 : 165,740.07 = 67,109.50 : x
  2. Step 2: Convert to fraction form
    120,101.50/165,740.07 = 67,109.50/x
  3. Step 3: Cross multiply
    120,101.50x = 165,740.07 × 67,109.50
  4. Step 4: Simplify right side
    120,101.50x = 11,122,733,227.67
  5. Step 5: Solve for x
    x = 11,122,733,227.67/120,101.50
  6. Step 6: Final answer
    x = 92,611.11

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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.