Home / 100,905.82-139,250.07-58,488.94

Finding the Fourth Proportional to 100,905.82, 139,250.07 and 58,488.94

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Solution

The fourth proportional to 100,905.82, 139,250.07 and 58,488.94 is: 80,714.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,905.82 : 139,250.07 = 58,488.94 : x
  2. Step 2: Convert to fraction form
    100,905.82/139,250.07 = 58,488.94/x
  3. Step 3: Cross multiply
    100,905.82x = 139,250.07 × 58,488.94
  4. Step 4: Simplify right side
    100,905.82x = 8,144,588,989.23
  5. Step 5: Solve for x
    x = 8,144,588,989.23/100,905.82
  6. Step 6: Final answer
    x = 80,714.76

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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.