Home / 137,873.08-190,235.34-80,486.36

Finding the Fourth Proportional to 137,873.08, 190,235.34 and 80,486.36

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Solution

The fourth proportional to 137,873.08, 190,235.34 and 80,486.36 is: 111,053.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,873.08 : 190,235.34 = 80,486.36 : x
  2. Step 2: Convert to fraction form
    137,873.08/190,235.34 = 80,486.36/x
  3. Step 3: Cross multiply
    137,873.08x = 190,235.34 × 80,486.36
  4. Step 4: Simplify right side
    137,873.08x = 15,311,349,233.29
  5. Step 5: Solve for x
    x = 15,311,349,233.29/137,873.08
  6. Step 6: Final answer
    x = 111,053.94

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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.