Home / 91,269.36-136,762.93-71,231.34

Finding the Fourth Proportional to 91,269.36, 136,762.93 and 71,231.34

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Solution

The fourth proportional to 91,269.36, 136,762.93 and 71,231.34 is: 106,736.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,269.36 : 136,762.93 = 71,231.34 : x
  2. Step 2: Convert to fraction form
    91,269.36/136,762.93 = 71,231.34/x
  3. Step 3: Cross multiply
    91,269.36x = 136,762.93 × 71,231.34
  4. Step 4: Simplify right side
    91,269.36x = 9,741,806,588.15
  5. Step 5: Solve for x
    x = 9,741,806,588.15/91,269.36
  6. Step 6: Final answer
    x = 106,736.88

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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.