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Finding the Fourth Proportional to 139,854.22, 209,787.09 and 73,257.10

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Solution

The fourth proportional to 139,854.22, 209,787.09 and 73,257.10 is: 109,888.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,854.22 : 209,787.09 = 73,257.10 : x
  2. Step 2: Convert to fraction form
    139,854.22/209,787.09 = 73,257.10/x
  3. Step 3: Cross multiply
    139,854.22x = 209,787.09 × 73,257.10
  4. Step 4: Simplify right side
    139,854.22x = 15,368,393,830.84
  5. Step 5: Solve for x
    x = 15,368,393,830.84/139,854.22
  6. Step 6: Final answer
    x = 109,888.67

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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.