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Finding the Fourth Proportional to 188,276.62, 259,823.57 and 103,395.50

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Solution

The fourth proportional to 188,276.62, 259,823.57 and 103,395.50 is: 142,686.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,276.62 : 259,823.57 = 103,395.50 : x
  2. Step 2: Convert to fraction form
    188,276.62/259,823.57 = 103,395.50/x
  3. Step 3: Cross multiply
    188,276.62x = 259,823.57 × 103,395.50
  4. Step 4: Simplify right side
    188,276.62x = 26,864,587,931.94
  5. Step 5: Solve for x
    x = 26,864,587,931.94/188,276.62
  6. Step 6: Final answer
    x = 142,686.80

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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.