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Finding the Fourth Proportional to 125,864.40, 188,796.60 and 102,824.40

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Solution

The fourth proportional to 125,864.40, 188,796.60 and 102,824.40 is: 154,236.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,864.40 : 188,796.60 = 102,824.40 : x
  2. Step 2: Convert to fraction form
    125,864.40/188,796.60 = 102,824.40/x
  3. Step 3: Cross multiply
    125,864.40x = 188,796.60 × 102,824.40
  4. Step 4: Simplify right side
    125,864.40x = 19,412,897,117.04
  5. Step 5: Solve for x
    x = 19,412,897,117.04/125,864.40
  6. Step 6: Final answer
    x = 154,236.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.