Home / 138,492.74-190,858.94-100,187.24

Finding the Fourth Proportional to 138,492.74, 190,858.94 and 100,187.24

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Solution

The fourth proportional to 138,492.74, 190,858.94 and 100,187.24 is: 138,069.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,492.74 : 190,858.94 = 100,187.24 : x
  2. Step 2: Convert to fraction form
    138,492.74/190,858.94 = 100,187.24/x
  3. Step 3: Cross multiply
    138,492.74x = 190,858.94 × 100,187.24
  4. Step 4: Simplify right side
    138,492.74x = 19,121,630,427.93
  5. Step 5: Solve for x
    x = 19,121,630,427.93/138,492.74
  6. Step 6: Final answer
    x = 138,069.55

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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.