Home / 138,642.36-191,399.94-106,741.32

Finding the Fourth Proportional to 138,642.36, 191,399.94 and 106,741.32

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Solution

The fourth proportional to 138,642.36, 191,399.94 and 106,741.32 is: 147,359.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,642.36 : 191,399.94 = 106,741.32 : x
  2. Step 2: Convert to fraction form
    138,642.36/191,399.94 = 106,741.32/x
  3. Step 3: Cross multiply
    138,642.36x = 191,399.94 × 106,741.32
  4. Step 4: Simplify right side
    138,642.36x = 20,430,282,243.52
  5. Step 5: Solve for x
    x = 20,430,282,243.52/138,642.36
  6. Step 6: Final answer
    x = 147,359.60

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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.