Home / 137,859.48-190,237.32-77,428.56

Finding the Fourth Proportional to 137,859.48, 190,237.32 and 77,428.56

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Solution

The fourth proportional to 137,859.48, 190,237.32 and 77,428.56 is: 106,846.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,859.48 : 190,237.32 = 77,428.56 : x
  2. Step 2: Convert to fraction form
    137,859.48/190,237.32 = 77,428.56/x
  3. Step 3: Cross multiply
    137,859.48x = 190,237.32 × 77,428.56
  4. Step 4: Simplify right side
    137,859.48x = 14,729,801,745.86
  5. Step 5: Solve for x
    x = 14,729,801,745.86/137,859.48
  6. Step 6: Final answer
    x = 106,846.49

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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.