Home / 137,986.05-190,436.52-76,738.34

Finding the Fourth Proportional to 137,986.05, 190,436.52 and 76,738.34

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Solution

The fourth proportional to 137,986.05, 190,436.52 and 76,738.34 is: 105,907.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,986.05 : 190,436.52 = 76,738.34 : x
  2. Step 2: Convert to fraction form
    137,986.05/190,436.52 = 76,738.34/x
  3. Step 3: Cross multiply
    137,986.05x = 190,436.52 × 76,738.34
  4. Step 4: Simplify right side
    137,986.05x = 14,613,781,681.18
  5. Step 5: Solve for x
    x = 14,613,781,681.18/137,986.05
  6. Step 6: Final answer
    x = 105,907.68

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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.