Home / 131,469.40-181,427.34-74,890.36

Finding the Fourth Proportional to 131,469.40, 181,427.34 and 74,890.36

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Solution

The fourth proportional to 131,469.40, 181,427.34 and 74,890.36 is: 103,348.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,469.40 : 181,427.34 = 74,890.36 : x
  2. Step 2: Convert to fraction form
    131,469.40/181,427.34 = 74,890.36/x
  3. Step 3: Cross multiply
    131,469.40x = 181,427.34 × 74,890.36
  4. Step 4: Simplify right side
    131,469.40x = 13,587,158,806.44
  5. Step 5: Solve for x
    x = 13,587,158,806.44/131,469.40
  6. Step 6: Final answer
    x = 103,348.45

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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.