Home / 139,389.80-209,092.64-39,542.18

Finding the Fourth Proportional to 139,389.80, 209,092.64 and 39,542.18

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Solution

The fourth proportional to 139,389.80, 209,092.64 and 39,542.18 is: 59,315.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,389.80 : 209,092.64 = 39,542.18 : x
  2. Step 2: Convert to fraction form
    139,389.80/209,092.64 = 39,542.18/x
  3. Step 3: Cross multiply
    139,389.80x = 209,092.64 × 39,542.18
  4. Step 4: Simplify right side
    139,389.80x = 8,267,977,564.38
  5. Step 5: Solve for x
    x = 8,267,977,564.38/139,389.80
  6. Step 6: Final answer
    x = 59,315.52

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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.