Home / 208,776.37-313,011.19-66,539.80

Finding the Fourth Proportional to 208,776.37, 313,011.19 and 66,539.80

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Solution

The fourth proportional to 208,776.37, 313,011.19 and 66,539.80 is: 99,760.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,776.37 : 313,011.19 = 66,539.80 : x
  2. Step 2: Convert to fraction form
    208,776.37/313,011.19 = 66,539.80/x
  3. Step 3: Cross multiply
    208,776.37x = 313,011.19 × 66,539.80
  4. Step 4: Simplify right side
    208,776.37x = 20,827,700,248.96
  5. Step 5: Solve for x
    x = 20,827,700,248.96/208,776.37
  6. Step 6: Final answer
    x = 99,760.81

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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.