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Finding the Fourth Proportional to 185,378.32, 278,048.35 and 125,789.41

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Solution

The fourth proportional to 185,378.32, 278,048.35 and 125,789.41 is: 188,671.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,378.32 : 278,048.35 = 125,789.41 : x
  2. Step 2: Convert to fraction form
    185,378.32/278,048.35 = 125,789.41/x
  3. Step 3: Cross multiply
    185,378.32x = 278,048.35 × 125,789.41
  4. Step 4: Simplify right side
    185,378.32x = 34,975,536,131.18
  5. Step 5: Solve for x
    x = 34,975,536,131.18/185,378.32
  6. Step 6: Final answer
    x = 188,671.12

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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.