Home / 138,873.03-208,320.35-45,388.23

Finding the Fourth Proportional to 138,873.03, 208,320.35 and 45,388.23

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Solution

The fourth proportional to 138,873.03, 208,320.35 and 45,388.23 is: 68,085.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,873.03 : 208,320.35 = 45,388.23 : x
  2. Step 2: Convert to fraction form
    138,873.03/208,320.35 = 45,388.23/x
  3. Step 3: Cross multiply
    138,873.03x = 208,320.35 × 45,388.23
  4. Step 4: Simplify right side
    138,873.03x = 9,455,291,732.54
  5. Step 5: Solve for x
    x = 9,455,291,732.54/138,873.03
  6. Step 6: Final answer
    x = 68,085.87

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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.