Home / 139,565.06-192,603.81-85,881.50

Finding the Fourth Proportional to 139,565.06, 192,603.81 and 85,881.50

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Solution

The fourth proportional to 139,565.06, 192,603.81 and 85,881.50 is: 118,518.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,565.06 : 192,603.81 = 85,881.50 : x
  2. Step 2: Convert to fraction form
    139,565.06/192,603.81 = 85,881.50/x
  3. Step 3: Cross multiply
    139,565.06x = 192,603.81 × 85,881.50
  4. Step 4: Simplify right side
    139,565.06x = 16,541,102,716.09
  5. Step 5: Solve for x
    x = 16,541,102,716.09/139,565.06
  6. Step 6: Final answer
    x = 118,518.94

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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.