Home / 190,738.36-286,094.78-78,389.48

Finding the Fourth Proportional to 190,738.36, 286,094.78 and 78,389.48

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Solution

The fourth proportional to 190,738.36, 286,094.78 and 78,389.48 is: 117,578.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,738.36 : 286,094.78 = 78,389.48 : x
  2. Step 2: Convert to fraction form
    190,738.36/286,094.78 = 78,389.48/x
  3. Step 3: Cross multiply
    190,738.36x = 286,094.78 × 78,389.48
  4. Step 4: Simplify right side
    190,738.36x = 22,426,821,034.91
  5. Step 5: Solve for x
    x = 22,426,821,034.91/190,738.36
  6. Step 6: Final answer
    x = 117,578.98

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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.