Home / 208,021.41-312,079.14-65,875.32

Finding the Fourth Proportional to 208,021.41, 312,079.14 and 65,875.32

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Solution

The fourth proportional to 208,021.41, 312,079.14 and 65,875.32 is: 98,827.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,021.41 : 312,079.14 = 65,875.32 : x
  2. Step 2: Convert to fraction form
    208,021.41/312,079.14 = 65,875.32/x
  3. Step 3: Cross multiply
    208,021.41x = 312,079.14 × 65,875.32
  4. Step 4: Simplify right side
    208,021.41x = 20,558,313,212.82
  5. Step 5: Solve for x
    x = 20,558,313,212.82/208,021.41
  6. Step 6: Final answer
    x = 98,827.87

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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.