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Finding the Fourth Proportional to 112,014, 154,579.32 and 61,716.24

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Solution

The fourth proportional to 112,014, 154,579.32 and 61,716.24 is: 85,168.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,014 : 154,579.32 = 61,716.24 : x
  2. Step 2: Convert to fraction form
    112,014/154,579.32 = 61,716.24/x
  3. Step 3: Cross multiply
    112,014x = 154,579.32 × 61,716.24
  4. Step 4: Simplify right side
    112,014x = 9,540,054,412.16
  5. Step 5: Solve for x
    x = 9,540,054,412.16/112,014
  6. Step 6: Final answer
    x = 85,168.41

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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.