Home / 190,284.86-285,453.95-77,981.06

Finding the Fourth Proportional to 190,284.86, 285,453.95 and 77,981.06

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Solution

The fourth proportional to 190,284.86, 285,453.95 and 77,981.06 is: 116,982.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,284.86 : 285,453.95 = 77,981.06 : x
  2. Step 2: Convert to fraction form
    190,284.86/285,453.95 = 77,981.06/x
  3. Step 3: Cross multiply
    190,284.86x = 285,453.95 × 77,981.06
  4. Step 4: Simplify right side
    190,284.86x = 22,259,999,785.01
  5. Step 5: Solve for x
    x = 22,259,999,785.01/190,284.86
  6. Step 6: Final answer
    x = 116,982.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.