Home / 208,621.12-312,818.64-73,617.52

Finding the Fourth Proportional to 208,621.12, 312,818.64 and 73,617.52

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Solution

The fourth proportional to 208,621.12, 312,818.64 and 73,617.52 is: 110,386.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,621.12 : 312,818.64 = 73,617.52 : x
  2. Step 2: Convert to fraction form
    208,621.12/312,818.64 = 73,617.52/x
  3. Step 3: Cross multiply
    208,621.12x = 312,818.64 × 73,617.52
  4. Step 4: Simplify right side
    208,621.12x = 23,028,932,486.57
  5. Step 5: Solve for x
    x = 23,028,932,486.57/208,621.12
  6. Step 6: Final answer
    x = 110,386.39

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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.