Home / 138,230.12-190,849.38-106,342.76

Finding the Fourth Proportional to 138,230.12, 190,849.38 and 106,342.76

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Solution

The fourth proportional to 138,230.12, 190,849.38 and 106,342.76 is: 146,823.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,230.12 : 190,849.38 = 106,342.76 : x
  2. Step 2: Convert to fraction form
    138,230.12/190,849.38 = 106,342.76/x
  3. Step 3: Cross multiply
    138,230.12x = 190,849.38 × 106,342.76
  4. Step 4: Simplify right side
    138,230.12x = 20,295,449,813.49
  5. Step 5: Solve for x
    x = 20,295,449,813.49/138,230.12
  6. Step 6: Final answer
    x = 146,823.64

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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.