Home / 138,821.96-208,276.68-45,305.84

Finding the Fourth Proportional to 138,821.96, 208,276.68 and 45,305.84

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Solution

The fourth proportional to 138,821.96, 208,276.68 and 45,305.84 is: 67,973.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,821.96 : 208,276.68 = 45,305.84 : x
  2. Step 2: Convert to fraction form
    138,821.96/208,276.68 = 45,305.84/x
  3. Step 3: Cross multiply
    138,821.96x = 208,276.68 × 45,305.84
  4. Step 4: Simplify right side
    138,821.96x = 9,436,149,939.81
  5. Step 5: Solve for x
    x = 9,436,149,939.81/138,821.96
  6. Step 6: Final answer
    x = 67,973.03

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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.