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Finding the Fourth Proportional to 129,784.53, 179,102.64 and 73,195.91

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Solution

The fourth proportional to 129,784.53, 179,102.64 and 73,195.91 is: 101,010.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,784.53 : 179,102.64 = 73,195.91 : x
  2. Step 2: Convert to fraction form
    129,784.53/179,102.64 = 73,195.91/x
  3. Step 3: Cross multiply
    129,784.53x = 179,102.64 × 73,195.91
  4. Step 4: Simplify right side
    129,784.53x = 13,109,580,718.20
  5. Step 5: Solve for x
    x = 13,109,580,718.20/129,784.53
  6. Step 6: Final answer
    x = 101,010.35

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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.