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Finding the Fourth Proportional to 188,166.70, 259,672.99 and 103,291.50

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Solution

The fourth proportional to 188,166.70, 259,672.99 and 103,291.50 is: 142,543.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,166.70 : 259,672.99 = 103,291.50 : x
  2. Step 2: Convert to fraction form
    188,166.70/259,672.99 = 103,291.50/x
  3. Step 3: Cross multiply
    188,166.70x = 259,672.99 × 103,291.50
  4. Step 4: Simplify right side
    188,166.70x = 26,822,012,646.59
  5. Step 5: Solve for x
    x = 26,822,012,646.59/188,166.70
  6. Step 6: Final answer
    x = 142,543.89

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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.