Home / 72,213.26-107,840.06-71,431.34

Finding the Fourth Proportional to 72,213.26, 107,840.06 and 71,431.34

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Solution

The fourth proportional to 72,213.26, 107,840.06 and 71,431.34 is: 106,672.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,213.26 : 107,840.06 = 71,431.34 : x
  2. Step 2: Convert to fraction form
    72,213.26/107,840.06 = 71,431.34/x
  3. Step 3: Cross multiply
    72,213.26x = 107,840.06 × 71,431.34
  4. Step 4: Simplify right side
    72,213.26x = 7,703,159,362.99
  5. Step 5: Solve for x
    x = 7,703,159,362.99/72,213.26
  6. Step 6: Final answer
    x = 106,672.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.