Home / 137,858.29-190,231-77,415.19

Finding the Fourth Proportional to 137,858.29, 190,231 and 77,415.19

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Solution

The fourth proportional to 137,858.29, 190,231 and 77,415.19 is: 106,825.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,858.29 : 190,231 = 77,415.19 : x
  2. Step 2: Convert to fraction form
    137,858.29/190,231 = 77,415.19/x
  3. Step 3: Cross multiply
    137,858.29x = 190,231 × 77,415.19
  4. Step 4: Simplify right side
    137,858.29x = 14,726,769,008.89
  5. Step 5: Solve for x
    x = 14,726,769,008.89/137,858.29
  6. Step 6: Final answer
    x = 106,825.41

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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.