Home / 130,420.62-179,987.20-73,056.60

Finding the Fourth Proportional to 130,420.62, 179,987.20 and 73,056.60

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Solution

The fourth proportional to 130,420.62, 179,987.20 and 73,056.60 is: 100,821.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,420.62 : 179,987.20 = 73,056.60 : x
  2. Step 2: Convert to fraction form
    130,420.62/179,987.20 = 73,056.60/x
  3. Step 3: Cross multiply
    130,420.62x = 179,987.20 × 73,056.60
  4. Step 4: Simplify right side
    130,420.62x = 13,149,252,692.88
  5. Step 5: Solve for x
    x = 13,149,252,692.88/130,420.62
  6. Step 6: Final answer
    x = 100,821.88

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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.