Home / 189,291.31-261,217.43-104,406.55

Finding the Fourth Proportional to 189,291.31, 261,217.43 and 104,406.55

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Solution

The fourth proportional to 189,291.31, 261,217.43 and 104,406.55 is: 144,078.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,291.31 : 261,217.43 = 104,406.55 : x
  2. Step 2: Convert to fraction form
    189,291.31/261,217.43 = 104,406.55/x
  3. Step 3: Cross multiply
    189,291.31x = 261,217.43 × 104,406.55
  4. Step 4: Simplify right side
    189,291.31x = 27,272,810,666.17
  5. Step 5: Solve for x
    x = 27,272,810,666.17/189,291.31
  6. Step 6: Final answer
    x = 144,078.51

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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.