Home / 129,749.55-179,055.68-76,066.35

Finding the Fourth Proportional to 129,749.55, 179,055.68 and 76,066.35

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Solution

The fourth proportional to 129,749.55, 179,055.68 and 76,066.35 is: 104,972.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,749.55 : 179,055.68 = 76,066.35 : x
  2. Step 2: Convert to fraction form
    129,749.55/179,055.68 = 76,066.35/x
  3. Step 3: Cross multiply
    129,749.55x = 179,055.68 × 76,066.35
  4. Step 4: Simplify right side
    129,749.55x = 13,620,111,644.04
  5. Step 5: Solve for x
    x = 13,620,111,644.04/129,749.55
  6. Step 6: Final answer
    x = 104,972.32

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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.