Home / 120,622,709.20-180,934,063.80-100,534,239.40

Finding the Fourth Proportional to 120,622,709.20, 180,934,063.80 and 100,534,239.40

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Solution

The fourth proportional to 120,622,709.20, 180,934,063.80 and 100,534,239.40 is: 150,801,359.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,622,709.20 : 180,934,063.80 = 100,534,239.40 : x
  2. Step 2: Convert to fraction form
    120,622,709.20/180,934,063.80 = 100,534,239.40/x
  3. Step 3: Cross multiply
    120,622,709.20x = 180,934,063.80 × 100,534,239.40
  4. Step 4: Simplify right side
    120,622,709.20x = 18,190,068,485,684,076
  5. Step 5: Solve for x
    x = 18,190,068,485,684,076/120,622,709.20
  6. Step 6: Final answer
    x = 150,801,359.10

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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.