Home / 103,383.92-142,810.62-81,006.06

Finding the Fourth Proportional to 103,383.92, 142,810.62 and 81,006.06

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Solution

The fourth proportional to 103,383.92, 142,810.62 and 81,006.06 is: 111,898.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,383.92 : 142,810.62 = 81,006.06 : x
  2. Step 2: Convert to fraction form
    103,383.92/142,810.62 = 81,006.06/x
  3. Step 3: Cross multiply
    103,383.92x = 142,810.62 × 81,006.06
  4. Step 4: Simplify right side
    103,383.92x = 11,568,525,652.36
  5. Step 5: Solve for x
    x = 11,568,525,652.36/103,383.92
  6. Step 6: Final answer
    x = 111,898.69

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1.5x scale

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.