Home / 139,943.64-193,122.21-76,281.87

Finding the Fourth Proportional to 139,943.64, 193,122.21 and 76,281.87

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Solution

The fourth proportional to 139,943.64, 193,122.21 and 76,281.87 is: 105,268.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,943.64 : 193,122.21 = 76,281.87 : x
  2. Step 2: Convert to fraction form
    139,943.64/193,122.21 = 76,281.87/x
  3. Step 3: Cross multiply
    139,943.64x = 193,122.21 × 76,281.87
  4. Step 4: Simplify right side
    139,943.64x = 14,731,723,317.33
  5. Step 5: Solve for x
    x = 14,731,723,317.33/139,943.64
  6. Step 6: Final answer
    x = 105,268.97

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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.