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Finding the Fourth Proportional to 125,599.37, 188,558.96 and 81,411.03

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Solution

The fourth proportional to 125,599.37, 188,558.96 and 81,411.03 is: 122,220.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,599.37 : 188,558.96 = 81,411.03 : x
  2. Step 2: Convert to fraction form
    125,599.37/188,558.96 = 81,411.03/x
  3. Step 3: Cross multiply
    125,599.37x = 188,558.96 × 81,411.03
  4. Step 4: Simplify right side
    125,599.37x = 15,350,778,742.27
  5. Step 5: Solve for x
    x = 15,350,778,742.27/125,599.37
  6. Step 6: Final answer
    x = 122,220.19

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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.