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Finding the Fourth Proportional to 130,369.86, 179,910.48 and 70,753.86

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Solution

The fourth proportional to 130,369.86, 179,910.48 and 70,753.86 is: 97,640.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,369.86 : 179,910.48 = 70,753.86 : x
  2. Step 2: Convert to fraction form
    130,369.86/179,910.48 = 70,753.86/x
  3. Step 3: Cross multiply
    130,369.86x = 179,910.48 × 70,753.86
  4. Step 4: Simplify right side
    130,369.86x = 12,729,360,914.45
  5. Step 5: Solve for x
    x = 12,729,360,914.45/130,369.86
  6. Step 6: Final answer
    x = 97,640.37

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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.