Home / 137,905.94-190,313.08-77,480.48

Finding the Fourth Proportional to 137,905.94, 190,313.08 and 77,480.48

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Solution

The fourth proportional to 137,905.94, 190,313.08 and 77,480.48 is: 106,924.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,905.94 : 190,313.08 = 77,480.48 : x
  2. Step 2: Convert to fraction form
    137,905.94/190,313.08 = 77,480.48/x
  3. Step 3: Cross multiply
    137,905.94x = 190,313.08 × 77,480.48
  4. Step 4: Simplify right side
    137,905.94x = 14,745,548,243.49
  5. Step 5: Solve for x
    x = 14,745,548,243.49/137,905.94
  6. Step 6: Final answer
    x = 106,924.68

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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.