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Finding the Fourth Proportional to 188,689.50, 260,391.51 and 103,804.74

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Solution

The fourth proportional to 188,689.50, 260,391.51 and 103,804.74 is: 143,250.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,689.50 : 260,391.51 = 103,804.74 : x
  2. Step 2: Convert to fraction form
    188,689.50/260,391.51 = 103,804.74/x
  3. Step 3: Cross multiply
    188,689.50x = 260,391.51 × 103,804.74
  4. Step 4: Simplify right side
    188,689.50x = 27,029,872,993.76
  5. Step 5: Solve for x
    x = 27,029,872,993.76/188,689.50
  6. Step 6: Final answer
    x = 143,250.54

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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.