Home / 89,100.34-122,812.05-71,163.70

Finding the Fourth Proportional to 89,100.34, 122,812.05 and 71,163.70

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Solution

The fourth proportional to 89,100.34, 122,812.05 and 71,163.70 is: 98,088.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,100.34 : 122,812.05 = 71,163.70 : x
  2. Step 2: Convert to fraction form
    89,100.34/122,812.05 = 71,163.70/x
  3. Step 3: Cross multiply
    89,100.34x = 122,812.05 × 71,163.70
  4. Step 4: Simplify right side
    89,100.34x = 8,739,759,882.59
  5. Step 5: Solve for x
    x = 8,739,759,882.59/89,100.34
  6. Step 6: Final answer
    x = 98,088.96

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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.