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Finding the Fourth Proportional to 188,571.36, 260,191.24 and 105,788.12

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Solution

The fourth proportional to 188,571.36, 260,191.24 and 105,788.12 is: 145,966.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,571.36 : 260,191.24 = 105,788.12 : x
  2. Step 2: Convert to fraction form
    188,571.36/260,191.24 = 105,788.12/x
  3. Step 3: Cross multiply
    188,571.36x = 260,191.24 × 105,788.12
  4. Step 4: Simplify right side
    188,571.36x = 27,525,142,120.07
  5. Step 5: Solve for x
    x = 27,525,142,120.07/188,571.36
  6. Step 6: Final answer
    x = 145,966.72

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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.