Home / 120,017,766.11-165,651,161.72-72,964,841.45

Finding the Fourth Proportional to 120,017,766.11, 165,651,161.72 and 72,964,841.45

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Solution

The fourth proportional to 120,017,766.11, 165,651,161.72 and 72,964,841.45 is: 100,707,679.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,017,766.11 : 165,651,161.72 = 72,964,841.45 : x
  2. Step 2: Convert to fraction form
    120,017,766.11/165,651,161.72 = 72,964,841.45/x
  3. Step 3: Cross multiply
    120,017,766.11x = 165,651,161.72 × 72,964,841.45
  4. Step 4: Simplify right side
    120,017,766.11x = 12,086,710,750,908,110
  5. Step 5: Solve for x
    x = 12,086,710,750,908,110/120,017,766.11
  6. Step 6: Final answer
    x = 100,707,679.73

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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.