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Finding the Fourth Proportional to 112,219, 154,865.46 and 61,921.24

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Solution

The fourth proportional to 112,219, 154,865.46 and 61,921.24 is: 85,453.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,219 : 154,865.46 = 61,921.24 : x
  2. Step 2: Convert to fraction form
    112,219/154,865.46 = 61,921.24/x
  3. Step 3: Cross multiply
    112,219x = 154,865.46 × 61,921.24
  4. Step 4: Simplify right side
    112,219x = 9,589,461,316.37
  5. Step 5: Solve for x
    x = 9,589,461,316.37/112,219
  6. Step 6: Final answer
    x = 85,453.10

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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.