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Finding the Fourth Proportional to 116,722.40, 161,074.80 and 65,734.94

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Solution

The fourth proportional to 116,722.40, 161,074.80 and 65,734.94 is: 90,713.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,722.40 : 161,074.80 = 65,734.94 : x
  2. Step 2: Convert to fraction form
    116,722.40/161,074.80 = 65,734.94/x
  3. Step 3: Cross multiply
    116,722.40x = 161,074.80 × 65,734.94
  4. Step 4: Simplify right side
    116,722.40x = 10,588,242,313.51
  5. Step 5: Solve for x
    x = 10,588,242,313.51/116,722.40
  6. Step 6: Final answer
    x = 90,713.03

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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.