Home / 137,103.26-189,223.90-83,405.12

Finding the Fourth Proportional to 137,103.26, 189,223.90 and 83,405.12

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Solution

The fourth proportional to 137,103.26, 189,223.90 and 83,405.12 is: 115,112.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,103.26 : 189,223.90 = 83,405.12 : x
  2. Step 2: Convert to fraction form
    137,103.26/189,223.90 = 83,405.12/x
  3. Step 3: Cross multiply
    137,103.26x = 189,223.90 × 83,405.12
  4. Step 4: Simplify right side
    137,103.26x = 15,782,242,086.37
  5. Step 5: Solve for x
    x = 15,782,242,086.37/137,103.26
  6. Step 6: Final answer
    x = 115,112.08

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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.