Home / 189,645.19-261,705.99-103,604.47

Finding the Fourth Proportional to 189,645.19, 261,705.99 and 103,604.47

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Solution

The fourth proportional to 189,645.19, 261,705.99 and 103,604.47 is: 142,971.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,645.19 : 261,705.99 = 103,604.47 : x
  2. Step 2: Convert to fraction form
    189,645.19/261,705.99 = 103,604.47/x
  3. Step 3: Cross multiply
    189,645.19x = 261,705.99 × 103,604.47
  4. Step 4: Simplify right side
    189,645.19x = 27,113,909,955.28
  5. Step 5: Solve for x
    x = 27,113,909,955.28/189,645.19
  6. Step 6: Final answer
    x = 142,971.78

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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.