Home / 103,015.36-142,149.44-57,687.04

Finding the Fourth Proportional to 103,015.36, 142,149.44 and 57,687.04

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Solution

The fourth proportional to 103,015.36, 142,149.44 and 57,687.04 is: 79,601.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,015.36 : 142,149.44 = 57,687.04 : x
  2. Step 2: Convert to fraction form
    103,015.36/142,149.44 = 57,687.04/x
  3. Step 3: Cross multiply
    103,015.36x = 142,149.44 × 57,687.04
  4. Step 4: Simplify right side
    103,015.36x = 8,200,180,431.26
  5. Step 5: Solve for x
    x = 8,200,180,431.26/103,015.36
  6. Step 6: Final answer
    x = 79,601.53

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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.