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Finding the Fourth Proportional to 130,053.80, 195,080.70 and 73,872.20

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Solution

The fourth proportional to 130,053.80, 195,080.70 and 73,872.20 is: 110,808.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,053.80 : 195,080.70 = 73,872.20 : x
  2. Step 2: Convert to fraction form
    130,053.80/195,080.70 = 73,872.20/x
  3. Step 3: Cross multiply
    130,053.80x = 195,080.70 × 73,872.20
  4. Step 4: Simplify right side
    130,053.80x = 14,411,040,486.54
  5. Step 5: Solve for x
    x = 14,411,040,486.54/130,053.80
  6. Step 6: Final answer
    x = 110,808.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.