Home / 119,431.23-179,177.63-85,736.31

Finding the Fourth Proportional to 119,431.23, 179,177.63 and 85,736.31

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Solution

The fourth proportional to 119,431.23, 179,177.63 and 85,736.31 is: 128,626.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,431.23 : 179,177.63 = 85,736.31 : x
  2. Step 2: Convert to fraction form
    119,431.23/179,177.63 = 85,736.31/x
  3. Step 3: Cross multiply
    119,431.23x = 179,177.63 × 85,736.31
  4. Step 4: Simplify right side
    119,431.23x = 15,362,028,402.06
  5. Step 5: Solve for x
    x = 15,362,028,402.06/119,431.23
  6. Step 6: Final answer
    x = 128,626.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.