Home / 208,173.12-312,275.48-81,752.37

Finding the Fourth Proportional to 208,173.12, 312,275.48 and 81,752.37

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Solution

The fourth proportional to 208,173.12, 312,275.48 and 81,752.37 is: 122,634.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,173.12 : 312,275.48 = 81,752.37 : x
  2. Step 2: Convert to fraction form
    208,173.12/312,275.48 = 81,752.37/x
  3. Step 3: Cross multiply
    208,173.12x = 312,275.48 × 81,752.37
  4. Step 4: Simplify right side
    208,173.12x = 25,529,260,582.89
  5. Step 5: Solve for x
    x = 25,529,260,582.89/208,173.12
  6. Step 6: Final answer
    x = 122,634.76

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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.