Home / 138,782.08-208,183.65-54,501.58

Finding the Fourth Proportional to 138,782.08, 208,183.65 and 54,501.58

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Solution

The fourth proportional to 138,782.08, 208,183.65 and 54,501.58 is: 81,756.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,782.08 : 208,183.65 = 54,501.58 : x
  2. Step 2: Convert to fraction form
    138,782.08/208,183.65 = 54,501.58/x
  3. Step 3: Cross multiply
    138,782.08x = 208,183.65 × 54,501.58
  4. Step 4: Simplify right side
    138,782.08x = 11,346,337,855.17
  5. Step 5: Solve for x
    x = 11,346,337,855.17/138,782.08
  6. Step 6: Final answer
    x = 81,756.51

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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.