Home / 100,608.41-138,852.73-64,902.23

Finding the Fourth Proportional to 100,608.41, 138,852.73 and 64,902.23

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Solution

The fourth proportional to 100,608.41, 138,852.73 and 64,902.23 is: 89,573.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,608.41 : 138,852.73 = 64,902.23 : x
  2. Step 2: Convert to fraction form
    100,608.41/138,852.73 = 64,902.23/x
  3. Step 3: Cross multiply
    100,608.41x = 138,852.73 × 64,902.23
  4. Step 4: Simplify right side
    100,608.41x = 9,011,851,726.15
  5. Step 5: Solve for x
    x = 9,011,851,726.15/100,608.41
  6. Step 6: Final answer
    x = 89,573.54

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1.5x scale

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.