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Finding the Fourth Proportional to 111,878.37, 167,818.01 and 45,319.77

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Solution

The fourth proportional to 111,878.37, 167,818.01 and 45,319.77 is: 67,979.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,878.37 : 167,818.01 = 45,319.77 : x
  2. Step 2: Convert to fraction form
    111,878.37/167,818.01 = 45,319.77/x
  3. Step 3: Cross multiply
    111,878.37x = 167,818.01 × 45,319.77
  4. Step 4: Simplify right side
    111,878.37x = 7,605,473,388.46
  5. Step 5: Solve for x
    x = 7,605,473,388.46/111,878.37
  6. Step 6: Final answer
    x = 67,979.84

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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.