Home / 157,231.23-216,979.37-85,611.56

Finding the Fourth Proportional to 157,231.23, 216,979.37 and 85,611.56

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Solution

The fourth proportional to 157,231.23, 216,979.37 and 85,611.56 is: 118,144.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,231.23 : 216,979.37 = 85,611.56 : x
  2. Step 2: Convert to fraction form
    157,231.23/216,979.37 = 85,611.56/x
  3. Step 3: Cross multiply
    157,231.23x = 216,979.37 × 85,611.56
  4. Step 4: Simplify right side
    157,231.23x = 18,575,940,840.56
  5. Step 5: Solve for x
    x = 18,575,940,840.56/157,231.23
  6. Step 6: Final answer
    x = 118,144.09

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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.