Home / 139,420.23-209,131.04-34,239.21

Finding the Fourth Proportional to 139,420.23, 209,131.04 and 34,239.21

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Solution

The fourth proportional to 139,420.23, 209,131.04 and 34,239.21 is: 51,358.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,420.23 : 209,131.04 = 34,239.21 : x
  2. Step 2: Convert to fraction form
    139,420.23/209,131.04 = 34,239.21/x
  3. Step 3: Cross multiply
    139,420.23x = 209,131.04 × 34,239.21
  4. Step 4: Simplify right side
    139,420.23x = 7,160,480,379.23
  5. Step 5: Solve for x
    x = 7,160,480,379.23/139,420.23
  6. Step 6: Final answer
    x = 51,358.98

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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.