Home / 103,977.44-143,319.60-81,276.36

Finding the Fourth Proportional to 103,977.44, 143,319.60 and 81,276.36

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Solution

The fourth proportional to 103,977.44, 143,319.60 and 81,276.36 is: 112,029.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,977.44 : 143,319.60 = 81,276.36 : x
  2. Step 2: Convert to fraction form
    103,977.44/143,319.60 = 81,276.36/x
  3. Step 3: Cross multiply
    103,977.44x = 143,319.60 × 81,276.36
  4. Step 4: Simplify right side
    103,977.44x = 11,648,495,404.66
  5. Step 5: Solve for x
    x = 11,648,495,404.66/103,977.44
  6. Step 6: Final answer
    x = 112,029.07

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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.