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Finding the Fourth Proportional to 111,810.80, 154,298.84 and 64,091.84

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Solution

The fourth proportional to 111,810.80, 154,298.84 and 64,091.84 is: 88,446.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,810.80 : 154,298.84 = 64,091.84 : x
  2. Step 2: Convert to fraction form
    111,810.80/154,298.84 = 64,091.84/x
  3. Step 3: Cross multiply
    111,810.80x = 154,298.84 × 64,091.84
  4. Step 4: Simplify right side
    111,810.80x = 9,889,295,473.51
  5. Step 5: Solve for x
    x = 9,889,295,473.51/111,810.80
  6. Step 6: Final answer
    x = 88,446.69

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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.