Home / 138,294.05-190,849.37-77,866.92

Finding the Fourth Proportional to 138,294.05, 190,849.37 and 77,866.92

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Solution

The fourth proportional to 138,294.05, 190,849.37 and 77,866.92 is: 107,458.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,294.05 : 190,849.37 = 77,866.92 : x
  2. Step 2: Convert to fraction form
    138,294.05/190,849.37 = 77,866.92/x
  3. Step 3: Cross multiply
    138,294.05x = 190,849.37 × 77,866.92
  4. Step 4: Simplify right side
    138,294.05x = 14,860,852,236.51
  5. Step 5: Solve for x
    x = 14,860,852,236.51/138,294.05
  6. Step 6: Final answer
    x = 107,458.37

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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.