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Finding the Fourth Proportional to 130,395.96, 179,974.44 and 79,425.45

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Solution

The fourth proportional to 130,395.96, 179,974.44 and 79,425.45 is: 109,624.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,395.96 : 179,974.44 = 79,425.45 : x
  2. Step 2: Convert to fraction form
    130,395.96/179,974.44 = 79,425.45/x
  3. Step 3: Cross multiply
    130,395.96x = 179,974.44 × 79,425.45
  4. Step 4: Simplify right side
    130,395.96x = 14,294,550,885.50
  5. Step 5: Solve for x
    x = 14,294,550,885.50/130,395.96
  6. Step 6: Final answer
    x = 109,624.19

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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.