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Finding the Fourth Proportional to 189,145.28, 260,999.88 and 104,246

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Solution

The fourth proportional to 189,145.28, 260,999.88 and 104,246 is: 143,848.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,145.28 : 260,999.88 = 104,246 : x
  2. Step 2: Convert to fraction form
    189,145.28/260,999.88 = 104,246/x
  3. Step 3: Cross multiply
    189,145.28x = 260,999.88 × 104,246
  4. Step 4: Simplify right side
    189,145.28x = 27,208,193,490.48
  5. Step 5: Solve for x
    x = 27,208,193,490.48/189,145.28
  6. Step 6: Final answer
    x = 143,848.12

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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.