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Finding the Fourth Proportional to 130,405.74, 179,947.80 and 73,817.12

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Solution

The fourth proportional to 130,405.74, 179,947.80 and 73,817.12 is: 101,860.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,405.74 : 179,947.80 = 73,817.12 : x
  2. Step 2: Convert to fraction form
    130,405.74/179,947.80 = 73,817.12/x
  3. Step 3: Cross multiply
    130,405.74x = 179,947.80 × 73,817.12
  4. Step 4: Simplify right side
    130,405.74x = 13,283,227,446.60
  5. Step 5: Solve for x
    x = 13,283,227,446.60/130,405.74
  6. Step 6: Final answer
    x = 101,860.76

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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.