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Finding the Fourth Proportional to 139,065,742.22, 208,325,881.67 and 80,650,697.02

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Solution

The fourth proportional to 139,065,742.22, 208,325,881.67 and 80,650,697.02 is: 120,817,875.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,065,742.22 : 208,325,881.67 = 80,650,697.02 : x
  2. Step 2: Convert to fraction form
    139,065,742.22/208,325,881.67 = 80,650,697.02/x
  3. Step 3: Cross multiply
    139,065,742.22x = 208,325,881.67 × 80,650,697.02
  4. Step 4: Simplify right side
    139,065,742.22x = 16,801,627,563,067,472
  5. Step 5: Solve for x
    x = 16,801,627,563,067,472/139,065,742.22
  6. Step 6: Final answer
    x = 120,817,875.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.