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Finding the Fourth Proportional to 188,418.51, 260,019.60 and 103,535.58

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Solution

The fourth proportional to 188,418.51, 260,019.60 and 103,535.58 is: 142,880.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,418.51 : 260,019.60 = 103,535.58 : x
  2. Step 2: Convert to fraction form
    188,418.51/260,019.60 = 103,535.58/x
  3. Step 3: Cross multiply
    188,418.51x = 260,019.60 × 103,535.58
  4. Step 4: Simplify right side
    188,418.51x = 26,921,280,097.37
  5. Step 5: Solve for x
    x = 26,921,280,097.37/188,418.51
  6. Step 6: Final answer
    x = 142,880.23

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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.