Home / 100,847.36-139,170.48-56,135.36

Finding the Fourth Proportional to 100,847.36, 139,170.48 and 56,135.36

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Solution

The fourth proportional to 100,847.36, 139,170.48 and 56,135.36 is: 77,467.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,847.36 : 139,170.48 = 56,135.36 : x
  2. Step 2: Convert to fraction form
    100,847.36/139,170.48 = 56,135.36/x
  3. Step 3: Cross multiply
    100,847.36x = 139,170.48 × 56,135.36
  4. Step 4: Simplify right side
    100,847.36x = 7,812,384,996.17
  5. Step 5: Solve for x
    x = 7,812,384,996.17/100,847.36
  6. Step 6: Final answer
    x = 77,467.42

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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.