Home / 149,120.06-205,718.80-100,706.26

Finding the Fourth Proportional to 149,120.06, 205,718.80 and 100,706.26

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Solution

The fourth proportional to 149,120.06, 205,718.80 and 100,706.26 is: 138,929.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,120.06 : 205,718.80 = 100,706.26 : x
  2. Step 2: Convert to fraction form
    149,120.06/205,718.80 = 100,706.26/x
  3. Step 3: Cross multiply
    149,120.06x = 205,718.80 × 100,706.26
  4. Step 4: Simplify right side
    149,120.06x = 20,717,169,427.56
  5. Step 5: Solve for x
    x = 20,717,169,427.56/149,120.06
  6. Step 6: Final answer
    x = 138,929.46

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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.