Home / 109,485.09-151,113.61-71,177.96

Finding the Fourth Proportional to 109,485.09, 151,113.61 and 71,177.96

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Solution

The fourth proportional to 109,485.09, 151,113.61 and 71,177.96 is: 98,241.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,485.09 : 151,113.61 = 71,177.96 : x
  2. Step 2: Convert to fraction form
    109,485.09/151,113.61 = 71,177.96/x
  3. Step 3: Cross multiply
    109,485.09x = 151,113.61 × 71,177.96
  4. Step 4: Simplify right side
    109,485.09x = 10,755,957,754.36
  5. Step 5: Solve for x
    x = 10,755,957,754.36/109,485.09
  6. Step 6: Final answer
    x = 98,241.31

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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.