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Finding the Fourth Proportional to 188,650.68, 260,344.86 and 103,774.20

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Solution

The fourth proportional to 188,650.68, 260,344.86 and 103,774.20 is: 143,212.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,650.68 : 260,344.86 = 103,774.20 : x
  2. Step 2: Convert to fraction form
    188,650.68/260,344.86 = 103,774.20/x
  3. Step 3: Cross multiply
    188,650.68x = 260,344.86 × 103,774.20
  4. Step 4: Simplify right side
    188,650.68x = 27,017,079,570.61
  5. Step 5: Solve for x
    x = 27,017,079,570.61/188,650.68
  6. Step 6: Final answer
    x = 143,212.20

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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.