Home / 139,523,025.72-209,143,851.09-87,744,632.84

Finding the Fourth Proportional to 139,523,025.72, 209,143,851.09 and 87,744,632.84

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Solution

The fourth proportional to 139,523,025.72, 209,143,851.09 and 87,744,632.84 is: 131,528,472.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,523,025.72 : 209,143,851.09 = 87,744,632.84 : x
  2. Step 2: Convert to fraction form
    139,523,025.72/209,143,851.09 = 87,744,632.84/x
  3. Step 3: Cross multiply
    139,523,025.72x = 209,143,851.09 × 87,744,632.84
  4. Step 4: Simplify right side
    139,523,025.72x = 18,351,250,423,589,964
  5. Step 5: Solve for x
    x = 18,351,250,423,589,964/139,523,025.72
  6. Step 6: Final answer
    x = 131,528,472.30

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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.