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Finding the Fourth Proportional to 189,080.08, 260,928.48 and 104,200.72

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Solution

The fourth proportional to 189,080.08, 260,928.48 and 104,200.72 is: 143,795.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,080.08 : 260,928.48 = 104,200.72 : x
  2. Step 2: Convert to fraction form
    189,080.08/260,928.48 = 104,200.72/x
  3. Step 3: Cross multiply
    189,080.08x = 260,928.48 × 104,200.72
  4. Step 4: Simplify right side
    189,080.08x = 27,188,935,484.51
  5. Step 5: Solve for x
    x = 27,188,935,484.51/189,080.08
  6. Step 6: Final answer
    x = 143,795.87

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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.