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Finding the Fourth Proportional to 129,365.73, 178,523.19 and 72,004.03

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Solution

The fourth proportional to 129,365.73, 178,523.19 and 72,004.03 is: 99,364.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,365.73 : 178,523.19 = 72,004.03 : x
  2. Step 2: Convert to fraction form
    129,365.73/178,523.19 = 72,004.03/x
  3. Step 3: Cross multiply
    129,365.73x = 178,523.19 × 72,004.03
  4. Step 4: Simplify right side
    129,365.73x = 12,854,388,682.15
  5. Step 5: Solve for x
    x = 12,854,388,682.15/129,365.73
  6. Step 6: Final answer
    x = 99,364.71

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1.5x scale

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.