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Finding the Fourth Proportional to 188,691, 260,393.58 and 103,806.24

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Solution

The fourth proportional to 188,691, 260,393.58 and 103,806.24 is: 143,252.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,691 : 260,393.58 = 103,806.24 : x
  2. Step 2: Convert to fraction form
    188,691/260,393.58 = 103,806.24/x
  3. Step 3: Cross multiply
    188,691x = 260,393.58 × 103,806.24
  4. Step 4: Simplify right side
    188,691x = 27,030,478,459.94
  5. Step 5: Solve for x
    x = 27,030,478,459.94/188,691
  6. Step 6: Final answer
    x = 143,252.61

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1.5x scale

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.