Home / 139,066.41-191,840.97-87,993.06

Finding the Fourth Proportional to 139,066.41, 191,840.97 and 87,993.06

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Solution

The fourth proportional to 139,066.41, 191,840.97 and 87,993.06 is: 121,385.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,066.41 : 191,840.97 = 87,993.06 : x
  2. Step 2: Convert to fraction form
    139,066.41/191,840.97 = 87,993.06/x
  3. Step 3: Cross multiply
    139,066.41x = 191,840.97 × 87,993.06
  4. Step 4: Simplify right side
    139,066.41x = 16,880,673,983.67
  5. Step 5: Solve for x
    x = 16,880,673,983.67/139,066.41
  6. Step 6: Final answer
    x = 121,385.70

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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.