Home / 129,004.42-178,009.98-71,635.94

Finding the Fourth Proportional to 129,004.42, 178,009.98 and 71,635.94

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Solution

The fourth proportional to 129,004.42, 178,009.98 and 71,635.94 is: 98,848.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,004.42 : 178,009.98 = 71,635.94 : x
  2. Step 2: Convert to fraction form
    129,004.42/178,009.98 = 71,635.94/x
  3. Step 3: Cross multiply
    129,004.42x = 178,009.98 × 71,635.94
  4. Step 4: Simplify right side
    129,004.42x = 12,751,912,246.68
  5. Step 5: Solve for x
    x = 12,751,912,246.68/129,004.42
  6. Step 6: Final answer
    x = 98,848.65

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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.