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Finding the Fourth Proportional to 165,762.99, 248,718.51 and 86,859

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Solution

The fourth proportional to 165,762.99, 248,718.51 and 86,859 is: 130,327.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,762.99 : 248,718.51 = 86,859 : x
  2. Step 2: Convert to fraction form
    165,762.99/248,718.51 = 86,859/x
  3. Step 3: Cross multiply
    165,762.99x = 248,718.51 × 86,859
  4. Step 4: Simplify right side
    165,762.99x = 21,603,441,060.09
  5. Step 5: Solve for x
    x = 21,603,441,060.09/165,762.99
  6. Step 6: Final answer
    x = 130,327.29

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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.