Home / 100,618.50-138,795.75-62,827.14

Finding the Fourth Proportional to 100,618.50, 138,795.75 and 62,827.14

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Solution

The fourth proportional to 100,618.50, 138,795.75 and 62,827.14 is: 86,665.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,618.50 : 138,795.75 = 62,827.14 : x
  2. Step 2: Convert to fraction form
    100,618.50/138,795.75 = 62,827.14/x
  3. Step 3: Cross multiply
    100,618.50x = 138,795.75 × 62,827.14
  4. Step 4: Simplify right side
    100,618.50x = 8,720,140,016.66
  5. Step 5: Solve for x
    x = 8,720,140,016.66/100,618.50
  6. Step 6: Final answer
    x = 86,665.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.