Home / 189,485.05-261,493.33-103,447.66

Finding the Fourth Proportional to 189,485.05, 261,493.33 and 103,447.66

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Solution

The fourth proportional to 189,485.05, 261,493.33 and 103,447.66 is: 142,759.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,485.05 : 261,493.33 = 103,447.66 : x
  2. Step 2: Convert to fraction form
    189,485.05/261,493.33 = 103,447.66/x
  3. Step 3: Cross multiply
    189,485.05x = 261,493.33 × 103,447.66
  4. Step 4: Simplify right side
    189,485.05x = 27,050,871,987.79
  5. Step 5: Solve for x
    x = 27,050,871,987.79/189,485.05
  6. Step 6: Final answer
    x = 142,759.93

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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.