Home / 149,431.36-206,215.36-84,900.72

Finding the Fourth Proportional to 149,431.36, 206,215.36 and 84,900.72

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Solution

The fourth proportional to 149,431.36, 206,215.36 and 84,900.72 is: 117,163.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,431.36 : 206,215.36 = 84,900.72 : x
  2. Step 2: Convert to fraction form
    149,431.36/206,215.36 = 84,900.72/x
  3. Step 3: Cross multiply
    149,431.36x = 206,215.36 × 84,900.72
  4. Step 4: Simplify right side
    149,431.36x = 17,507,832,539.06
  5. Step 5: Solve for x
    x = 17,507,832,539.06/149,431.36
  6. Step 6: Final answer
    x = 117,163.04

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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.