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Finding the Fourth Proportional to 165,656.95, 248,485.43 and 139,412.95

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Solution

The fourth proportional to 165,656.95, 248,485.43 and 139,412.95 is: 209,119.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,656.95 : 248,485.43 = 139,412.95 : x
  2. Step 2: Convert to fraction form
    165,656.95/248,485.43 = 139,412.95/x
  3. Step 3: Cross multiply
    165,656.95x = 248,485.43 × 139,412.95
  4. Step 4: Simplify right side
    165,656.95x = 34,642,086,131.25
  5. Step 5: Solve for x
    x = 34,642,086,131.25/165,656.95
  6. Step 6: Final answer
    x = 209,119.43

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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.