Home / 138,081,268.48-190,623,793.56-100,869,764.80

Finding the Fourth Proportional to 138,081,268.48, 190,623,793.56 and 100,869,764.80

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Solution

The fourth proportional to 138,081,268.48, 190,623,793.56 and 100,869,764.80 is: 139,252,611.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,081,268.48 : 190,623,793.56 = 100,869,764.80 : x
  2. Step 2: Convert to fraction form
    138,081,268.48/190,623,793.56 = 100,869,764.80/x
  3. Step 3: Cross multiply
    138,081,268.48x = 190,623,793.56 × 100,869,764.80
  4. Step 4: Simplify right side
    138,081,268.48x = 19,228,177,221,680,956
  5. Step 5: Solve for x
    x = 19,228,177,221,680,956/138,081,268.48
  6. Step 6: Final answer
    x = 139,252,611.40

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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.