Home / 138,929.49-208,403.42-54,683.01

Finding the Fourth Proportional to 138,929.49, 208,403.42 and 54,683.01

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Solution

The fourth proportional to 138,929.49, 208,403.42 and 54,683.01 is: 82,028.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,929.49 : 208,403.42 = 54,683.01 : x
  2. Step 2: Convert to fraction form
    138,929.49/208,403.42 = 54,683.01/x
  3. Step 3: Cross multiply
    138,929.49x = 208,403.42 × 54,683.01
  4. Step 4: Simplify right side
    138,929.49x = 11,396,126,026.48
  5. Step 5: Solve for x
    x = 11,396,126,026.48/138,929.49
  6. Step 6: Final answer
    x = 82,028.13

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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.