Home / 121,143,644.70-181,715,467.05-72,770,703.90

Finding the Fourth Proportional to 121,143,644.70, 181,715,467.05 and 72,770,703.90

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Solution

The fourth proportional to 121,143,644.70, 181,715,467.05 and 72,770,703.90 is: 109,156,055.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,143,644.70 : 181,715,467.05 = 72,770,703.90 : x
  2. Step 2: Convert to fraction form
    121,143,644.70/181,715,467.05 = 72,770,703.90/x
  3. Step 3: Cross multiply
    121,143,644.70x = 181,715,467.05 × 72,770,703.90
  4. Step 4: Simplify right side
    121,143,644.70x = 13,223,562,446,745,758
  5. Step 5: Solve for x
    x = 13,223,562,446,745,758/121,143,644.70
  6. Step 6: Final answer
    x = 109,156,055.85

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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.