Home / 140,726.16-194,118.12-121,830.48

Finding the Fourth Proportional to 140,726.16, 194,118.12 and 121,830.48

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Solution

The fourth proportional to 140,726.16, 194,118.12 and 121,830.48 is: 168,053.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,726.16 : 194,118.12 = 121,830.48 : x
  2. Step 2: Convert to fraction form
    140,726.16/194,118.12 = 121,830.48/x
  3. Step 3: Cross multiply
    140,726.16x = 194,118.12 × 121,830.48
  4. Step 4: Simplify right side
    140,726.16x = 23,649,503,736.30
  5. Step 5: Solve for x
    x = 23,649,503,736.30/140,726.16
  6. Step 6: Final answer
    x = 168,053.36

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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.