Home / 139,898.20-209,805.64-51,130.98

Finding the Fourth Proportional to 139,898.20, 209,805.64 and 51,130.98

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Solution

The fourth proportional to 139,898.20, 209,805.64 and 51,130.98 is: 76,681.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,898.20 : 209,805.64 = 51,130.98 : x
  2. Step 2: Convert to fraction form
    139,898.20/209,805.64 = 51,130.98/x
  3. Step 3: Cross multiply
    139,898.20x = 209,805.64 × 51,130.98
  4. Step 4: Simplify right side
    139,898.20x = 10,727,567,982.73
  5. Step 5: Solve for x
    x = 10,727,567,982.73/139,898.20
  6. Step 6: Final answer
    x = 76,681.24

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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.