Home / 138,202.30-190,716.87-77,772.93

Finding the Fourth Proportional to 138,202.30, 190,716.87 and 77,772.93

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Solution

The fourth proportional to 138,202.30, 190,716.87 and 77,772.93 is: 107,325.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,202.30 : 190,716.87 = 77,772.93 : x
  2. Step 2: Convert to fraction form
    138,202.30/190,716.87 = 77,772.93/x
  3. Step 3: Cross multiply
    138,202.30x = 190,716.87 × 77,772.93
  4. Step 4: Simplify right side
    138,202.30x = 14,832,609,780.33
  5. Step 5: Solve for x
    x = 14,832,609,780.33/138,202.30
  6. Step 6: Final answer
    x = 107,325.35

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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.