Home / 100,405,267.07-149,931,769.97-81,997,728.38

Finding the Fourth Proportional to 100,405,267.07, 149,931,769.97 and 81,997,728.38

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Solution

The fourth proportional to 100,405,267.07, 149,931,769.97 and 81,997,728.38 is: 122,444,418.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,405,267.07 : 149,931,769.97 = 81,997,728.38 : x
  2. Step 2: Convert to fraction form
    100,405,267.07/149,931,769.97 = 81,997,728.38/x
  3. Step 3: Cross multiply
    100,405,267.07x = 149,931,769.97 × 81,997,728.38
  4. Step 4: Simplify right side
    100,405,267.07x = 12,294,064,548,373,054
  5. Step 5: Solve for x
    x = 12,294,064,548,373,054/100,405,267.07
  6. Step 6: Final answer
    x = 122,444,418.58

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.