Home / 103,181.75-142,398.11-57,256.41

Finding the Fourth Proportional to 103,181.75, 142,398.11 and 57,256.41

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Solution

The fourth proportional to 103,181.75, 142,398.11 and 57,256.41 is: 79,017.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,181.75 : 142,398.11 = 57,256.41 : x
  2. Step 2: Convert to fraction form
    103,181.75/142,398.11 = 57,256.41/x
  3. Step 3: Cross multiply
    103,181.75x = 142,398.11 × 57,256.41
  4. Step 4: Simplify right side
    103,181.75x = 8,153,204,712.53
  5. Step 5: Solve for x
    x = 8,153,204,712.53/103,181.75
  6. Step 6: Final answer
    x = 79,017.90

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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.