Home / 137,902.58-190,301.13-76,648.47

Finding the Fourth Proportional to 137,902.58, 190,301.13 and 76,648.47

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Solution

The fourth proportional to 137,902.58, 190,301.13 and 76,648.47 is: 105,772.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,902.58 : 190,301.13 = 76,648.47 : x
  2. Step 2: Convert to fraction form
    137,902.58/190,301.13 = 76,648.47/x
  3. Step 3: Cross multiply
    137,902.58x = 190,301.13 × 76,648.47
  4. Step 4: Simplify right side
    137,902.58x = 14,586,290,453.77
  5. Step 5: Solve for x
    x = 14,586,290,453.77/137,902.58
  6. Step 6: Final answer
    x = 105,772.43

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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.