Home / 138,690.27-208,041.33-54,468.69

Finding the Fourth Proportional to 138,690.27, 208,041.33 and 54,468.69

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Solution

The fourth proportional to 138,690.27, 208,041.33 and 54,468.69 is: 81,705.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,690.27 : 208,041.33 = 54,468.69 : x
  2. Step 2: Convert to fraction form
    138,690.27/208,041.33 = 54,468.69/x
  3. Step 3: Cross multiply
    138,690.27x = 208,041.33 × 54,468.69
  4. Step 4: Simplify right side
    138,690.27x = 11,331,738,710.96
  5. Step 5: Solve for x
    x = 11,331,738,710.96/138,690.27
  6. Step 6: Final answer
    x = 81,705.36

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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.