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Finding the Fourth Proportional to 188,330.61, 259,898.07 and 103,447.68

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Solution

The fourth proportional to 188,330.61, 259,898.07 and 103,447.68 is: 142,758.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,330.61 : 259,898.07 = 103,447.68 : x
  2. Step 2: Convert to fraction form
    188,330.61/259,898.07 = 103,447.68/x
  3. Step 3: Cross multiply
    188,330.61x = 259,898.07 × 103,447.68
  4. Step 4: Simplify right side
    188,330.61x = 26,885,851,078.49
  5. Step 5: Solve for x
    x = 26,885,851,078.49/188,330.61
  6. Step 6: Final answer
    x = 142,758.80

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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.