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Finding the Fourth Proportional to 111,670.32, 154,115.88 and 63,930.48

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Solution

The fourth proportional to 111,670.32, 154,115.88 and 63,930.48 is: 88,230.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,670.32 : 154,115.88 = 63,930.48 : x
  2. Step 2: Convert to fraction form
    111,670.32/154,115.88 = 63,930.48/x
  3. Step 3: Cross multiply
    111,670.32x = 154,115.88 × 63,930.48
  4. Step 4: Simplify right side
    111,670.32x = 9,852,702,184.02
  5. Step 5: Solve for x
    x = 9,852,702,184.02/111,670.32
  6. Step 6: Final answer
    x = 88,230.27

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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.