Home / 129,573.12-178,749.79-75,824.86

Finding the Fourth Proportional to 129,573.12, 178,749.79 and 75,824.86

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Solution

The fourth proportional to 129,573.12, 178,749.79 and 75,824.86 is: 104,602.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,573.12 : 178,749.79 = 75,824.86 : x
  2. Step 2: Convert to fraction form
    129,573.12/178,749.79 = 75,824.86/x
  3. Step 3: Cross multiply
    129,573.12x = 178,749.79 × 75,824.86
  4. Step 4: Simplify right side
    129,573.12x = 13,553,677,500.50
  5. Step 5: Solve for x
    x = 13,553,677,500.50/129,573.12
  6. Step 6: Final answer
    x = 104,602.54

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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.