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Finding the Fourth Proportional to 189,063.82, 260,913.63 and 104,186.35

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Solution

The fourth proportional to 189,063.82, 260,913.63 and 104,186.35 is: 143,780.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,063.82 : 260,913.63 = 104,186.35 : x
  2. Step 2: Convert to fraction form
    189,063.82/260,913.63 = 104,186.35/x
  3. Step 3: Cross multiply
    189,063.82x = 260,913.63 × 104,186.35
  4. Step 4: Simplify right side
    189,063.82x = 27,183,638,774.95
  5. Step 5: Solve for x
    x = 27,183,638,774.95/189,063.82
  6. Step 6: Final answer
    x = 143,780.23

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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.