Home / 139,386.30-209,087.39-39,538.68

Finding the Fourth Proportional to 139,386.30, 209,087.39 and 39,538.68

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Solution

The fourth proportional to 139,386.30, 209,087.39 and 39,538.68 is: 59,310.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,386.30 : 209,087.39 = 39,538.68 : x
  2. Step 2: Convert to fraction form
    139,386.30/209,087.39 = 39,538.68/x
  3. Step 3: Cross multiply
    139,386.30x = 209,087.39 × 39,538.68
  4. Step 4: Simplify right side
    139,386.30x = 8,267,039,405.25
  5. Step 5: Solve for x
    x = 8,267,039,405.25/139,386.30
  6. Step 6: Final answer
    x = 59,310.27

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1.5x scale

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.