Home / 100,942.58-139,298.91-55,624.77

Finding the Fourth Proportional to 100,942.58, 139,298.91 and 55,624.77

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Solution

The fourth proportional to 100,942.58, 139,298.91 and 55,624.77 is: 76,761.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,942.58 : 139,298.91 = 55,624.77 : x
  2. Step 2: Convert to fraction form
    100,942.58/139,298.91 = 55,624.77/x
  3. Step 3: Cross multiply
    100,942.58x = 139,298.91 × 55,624.77
  4. Step 4: Simplify right side
    100,942.58x = 7,748,469,830.00
  5. Step 5: Solve for x
    x = 7,748,469,830.00/100,942.58
  6. Step 6: Final answer
    x = 76,761.17

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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.