Home / 138,764.68-191,577.77-91,101.58

Finding the Fourth Proportional to 138,764.68, 191,577.77 and 91,101.58

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Solution

The fourth proportional to 138,764.68, 191,577.77 and 91,101.58 is: 125,774.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,764.68 : 191,577.77 = 91,101.58 : x
  2. Step 2: Convert to fraction form
    138,764.68/191,577.77 = 91,101.58/x
  3. Step 3: Cross multiply
    138,764.68x = 191,577.77 × 91,101.58
  4. Step 4: Simplify right side
    138,764.68x = 17,453,037,539.88
  5. Step 5: Solve for x
    x = 17,453,037,539.88/138,764.68
  6. Step 6: Final answer
    x = 125,774.35

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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.