Home / 138,853.98-208,140.72-54,673.22

Finding the Fourth Proportional to 138,853.98, 208,140.72 and 54,673.22

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Solution

The fourth proportional to 138,853.98, 208,140.72 and 54,673.22 is: 81,954.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,853.98 : 208,140.72 = 54,673.22 : x
  2. Step 2: Convert to fraction form
    138,853.98/208,140.72 = 54,673.22/x
  3. Step 3: Cross multiply
    138,853.98x = 208,140.72 × 54,673.22
  4. Step 4: Simplify right side
    138,853.98x = 11,379,722,334.81
  5. Step 5: Solve for x
    x = 11,379,722,334.81/138,853.98
  6. Step 6: Final answer
    x = 81,954.60

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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.