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Finding the Fourth Proportional to 188,259.72, 259,801.58 and 103,384.68

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Solution

The fourth proportional to 188,259.72, 259,801.58 and 103,384.68 is: 142,672.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,259.72 : 259,801.58 = 103,384.68 : x
  2. Step 2: Convert to fraction form
    188,259.72/259,801.58 = 103,384.68/x
  3. Step 3: Cross multiply
    188,259.72x = 259,801.58 × 103,384.68
  4. Step 4: Simplify right side
    188,259.72x = 26,859,503,211.79
  5. Step 5: Solve for x
    x = 26,859,503,211.79/188,259.72
  6. Step 6: Final answer
    x = 142,672.60

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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.