Home / 138,679,113.58-191,380,273.85-79,139,224.08

Finding the Fourth Proportional to 138,679,113.58, 191,380,273.85 and 79,139,224.08

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Solution

The fourth proportional to 138,679,113.58, 191,380,273.85 and 79,139,224.08 is: 109,213,896.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,679,113.58 : 191,380,273.85 = 79,139,224.08 : x
  2. Step 2: Convert to fraction form
    138,679,113.58/191,380,273.85 = 79,139,224.08/x
  3. Step 3: Cross multiply
    138,679,113.58x = 191,380,273.85 × 79,139,224.08
  4. Step 4: Simplify right side
    138,679,113.58x = 15,145,686,376,904,762
  5. Step 5: Solve for x
    x = 15,145,686,376,904,762/138,679,113.58
  6. Step 6: Final answer
    x = 109,213,896.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.