Home / 189,636.09-261,686.21-103,577.64

Finding the Fourth Proportional to 189,636.09, 261,686.21 and 103,577.64

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Solution

The fourth proportional to 189,636.09, 261,686.21 and 103,577.64 is: 142,930.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,636.09 : 261,686.21 = 103,577.64 : x
  2. Step 2: Convert to fraction form
    189,636.09/261,686.21 = 103,577.64/x
  3. Step 3: Cross multiply
    189,636.09x = 261,686.21 × 103,577.64
  4. Step 4: Simplify right side
    189,636.09x = 27,104,839,135.76
  5. Step 5: Solve for x
    x = 27,104,839,135.76/189,636.09
  6. Step 6: Final answer
    x = 142,930.81

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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.