Home / 139,386.05-209,087.01-39,538.43

Finding the Fourth Proportional to 139,386.05, 209,087.01 and 39,538.43

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Solution

The fourth proportional to 139,386.05, 209,087.01 and 39,538.43 is: 59,309.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,386.05 : 209,087.01 = 39,538.43 : x
  2. Step 2: Convert to fraction form
    139,386.05/209,087.01 = 39,538.43/x
  3. Step 3: Cross multiply
    139,386.05x = 209,087.01 × 39,538.43
  4. Step 4: Simplify right side
    139,386.05x = 8,266,971,063.36
  5. Step 5: Solve for x
    x = 8,266,971,063.36/139,386.05
  6. Step 6: Final answer
    x = 59,309.89

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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.