Home / 89,121.85-133,683.54-71,308.37

Finding the Fourth Proportional to 89,121.85, 133,683.54 and 71,308.37

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Solution

The fourth proportional to 89,121.85, 133,683.54 and 71,308.37 is: 106,963.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,121.85 : 133,683.54 = 71,308.37 : x
  2. Step 2: Convert to fraction form
    89,121.85/133,683.54 = 71,308.37/x
  3. Step 3: Cross multiply
    89,121.85x = 133,683.54 × 71,308.37
  4. Step 4: Simplify right side
    89,121.85x = 9,532,755,333.23
  5. Step 5: Solve for x
    x = 9,532,755,333.23/89,121.85
  6. Step 6: Final answer
    x = 106,963.17

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1.5x scale

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.