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Finding the Fourth Proportional to 189,179.90, 261,070.06 and 104,300

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Solution

The fourth proportional to 189,179.90, 261,070.06 and 104,300 is: 143,934.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,179.90 : 261,070.06 = 104,300 : x
  2. Step 2: Convert to fraction form
    189,179.90/261,070.06 = 104,300/x
  3. Step 3: Cross multiply
    189,179.90x = 261,070.06 × 104,300
  4. Step 4: Simplify right side
    189,179.90x = 27,229,607,258
  5. Step 5: Solve for x
    x = 27,229,607,258/189,179.90
  6. Step 6: Final answer
    x = 143,934.99

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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.