Home / 260,172.53-390,081.18-138,611.25

Finding the Fourth Proportional to 260,172.53, 390,081.18 and 138,611.25

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Solution

The fourth proportional to 260,172.53, 390,081.18 and 138,611.25 is: 207,822.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,172.53 : 390,081.18 = 138,611.25 : x
  2. Step 2: Convert to fraction form
    260,172.53/390,081.18 = 138,611.25/x
  3. Step 3: Cross multiply
    260,172.53x = 390,081.18 × 138,611.25
  4. Step 4: Simplify right side
    260,172.53x = 54,069,640,481.07
  5. Step 5: Solve for x
    x = 54,069,640,481.07/260,172.53
  6. Step 6: Final answer
    x = 207,822.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.