Home / 139,523,071.36-209,143,919.60-87,744,678.59

Finding the Fourth Proportional to 139,523,071.36, 209,143,919.60 and 87,744,678.59

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Solution

The fourth proportional to 139,523,071.36, 209,143,919.60 and 87,744,678.59 is: 131,528,540.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,523,071.36 : 209,143,919.60 = 87,744,678.59 : x
  2. Step 2: Convert to fraction form
    139,523,071.36/209,143,919.60 = 87,744,678.59/x
  3. Step 3: Cross multiply
    139,523,071.36x = 209,143,919.60 × 87,744,678.59
  4. Step 4: Simplify right side
    139,523,071.36x = 18,351,266,004,148,652
  5. Step 5: Solve for x
    x = 18,351,266,004,148,652/139,523,071.36
  6. Step 6: Final answer
    x = 131,528,540.95

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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.