Home / 129,561.22-178,794.98-75,835.72

Finding the Fourth Proportional to 129,561.22, 178,794.98 and 75,835.72

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Solution

The fourth proportional to 129,561.22, 178,794.98 and 75,835.72 is: 104,653.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,561.22 : 178,794.98 = 75,835.72 : x
  2. Step 2: Convert to fraction form
    129,561.22/178,794.98 = 75,835.72/x
  3. Step 3: Cross multiply
    129,561.22x = 178,794.98 × 75,835.72
  4. Step 4: Simplify right side
    129,561.22x = 13,559,046,040.69
  5. Step 5: Solve for x
    x = 13,559,046,040.69/129,561.22
  6. Step 6: Final answer
    x = 104,653.58

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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.