Home / 138,847.81-191,610.08-75,185.66

Finding the Fourth Proportional to 138,847.81, 191,610.08 and 75,185.66

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Solution

The fourth proportional to 138,847.81, 191,610.08 and 75,185.66 is: 103,756.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,847.81 : 191,610.08 = 75,185.66 : x
  2. Step 2: Convert to fraction form
    138,847.81/191,610.08 = 75,185.66/x
  3. Step 3: Cross multiply
    138,847.81x = 191,610.08 × 75,185.66
  4. Step 4: Simplify right side
    138,847.81x = 14,406,330,327.45
  5. Step 5: Solve for x
    x = 14,406,330,327.45/138,847.81
  6. Step 6: Final answer
    x = 103,756.27

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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.