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Finding the Fourth Proportional to 125,582.76, 188,220.90 and 69,420.60

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Solution

The fourth proportional to 125,582.76, 188,220.90 and 69,420.60 is: 104,046.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,582.76 : 188,220.90 = 69,420.60 : x
  2. Step 2: Convert to fraction form
    125,582.76/188,220.90 = 69,420.60/x
  3. Step 3: Cross multiply
    125,582.76x = 188,220.90 × 69,420.60
  4. Step 4: Simplify right side
    125,582.76x = 13,066,407,810.54
  5. Step 5: Solve for x
    x = 13,066,407,810.54/125,582.76
  6. Step 6: Final answer
    x = 104,046.19

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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.