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Finding the Fourth Proportional to 188,818.56, 260,559.60 and 103,919.28

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Solution

The fourth proportional to 188,818.56, 260,559.60 and 103,919.28 is: 143,403.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,818.56 : 260,559.60 = 103,919.28 : x
  2. Step 2: Convert to fraction form
    188,818.56/260,559.60 = 103,919.28/x
  3. Step 3: Cross multiply
    188,818.56x = 260,559.60 × 103,919.28
  4. Step 4: Simplify right side
    188,818.56x = 27,077,166,029.09
  5. Step 5: Solve for x
    x = 27,077,166,029.09/188,818.56
  6. Step 6: Final answer
    x = 143,403.10

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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.