Home / 120,965,475.80-181,448,213.70-69,947,139.80

Finding the Fourth Proportional to 120,965,475.80, 181,448,213.70 and 69,947,139.80

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Solution

The fourth proportional to 120,965,475.80, 181,448,213.70 and 69,947,139.80 is: 104,920,709.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,965,475.80 : 181,448,213.70 = 69,947,139.80 : x
  2. Step 2: Convert to fraction form
    120,965,475.80/181,448,213.70 = 69,947,139.80/x
  3. Step 3: Cross multiply
    120,965,475.80x = 181,448,213.70 × 69,947,139.80
  4. Step 4: Simplify right side
    120,965,475.80x = 12,691,783,570,134,174
  5. Step 5: Solve for x
    x = 12,691,783,570,134,174/120,965,475.80
  6. Step 6: Final answer
    x = 104,920,709.70

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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.