Home / 137,820.51-190,213.11-84,136.77

Finding the Fourth Proportional to 137,820.51, 190,213.11 and 84,136.77

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Solution

The fourth proportional to 137,820.51, 190,213.11 and 84,136.77 is: 116,121.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,820.51 : 190,213.11 = 84,136.77 : x
  2. Step 2: Convert to fraction form
    137,820.51/190,213.11 = 84,136.77/x
  3. Step 3: Cross multiply
    137,820.51x = 190,213.11 × 84,136.77
  4. Step 4: Simplify right side
    137,820.51x = 16,003,916,687.05
  5. Step 5: Solve for x
    x = 16,003,916,687.05/137,820.51
  6. Step 6: Final answer
    x = 116,121.44

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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.