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Finding the Fourth Proportional to 139,573.40, 209,360.10 and 125,576.60

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Solution

The fourth proportional to 139,573.40, 209,360.10 and 125,576.60 is: 188,364.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,573.40 : 209,360.10 = 125,576.60 : x
  2. Step 2: Convert to fraction form
    139,573.40/209,360.10 = 125,576.60/x
  3. Step 3: Cross multiply
    139,573.40x = 209,360.10 × 125,576.60
  4. Step 4: Simplify right side
    139,573.40x = 26,290,729,533.66
  5. Step 5: Solve for x
    x = 26,290,729,533.66/139,573.40
  6. Step 6: Final answer
    x = 188,364.90

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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.