Home / 136,978,013.28-189,029,910.96-74,253,917.28

Finding the Fourth Proportional to 136,978,013.28, 189,029,910.96 and 74,253,917.28

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Solution

The fourth proportional to 136,978,013.28, 189,029,910.96 and 74,253,917.28 is: 102,470,542.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,978,013.28 : 189,029,910.96 = 74,253,917.28 : x
  2. Step 2: Convert to fraction form
    136,978,013.28/189,029,910.96 = 74,253,917.28/x
  3. Step 3: Cross multiply
    136,978,013.28x = 189,029,910.96 × 74,253,917.28
  4. Step 4: Simplify right side
    136,978,013.28x = 14,036,211,371,869,606
  5. Step 5: Solve for x
    x = 14,036,211,371,869,606/136,978,013.28
  6. Step 6: Final answer
    x = 102,470,542.80

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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.