Home / 109,878.20-164,817.30-87,327.80

Finding the Fourth Proportional to 109,878.20, 164,817.30 and 87,327.80

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Solution

The fourth proportional to 109,878.20, 164,817.30 and 87,327.80 is: 130,991.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,878.20 : 164,817.30 = 87,327.80 : x
  2. Step 2: Convert to fraction form
    109,878.20/164,817.30 = 87,327.80/x
  3. Step 3: Cross multiply
    109,878.20x = 164,817.30 × 87,327.80
  4. Step 4: Simplify right side
    109,878.20x = 14,393,132,210.94
  5. Step 5: Solve for x
    x = 14,393,132,210.94/109,878.20
  6. Step 6: Final answer
    x = 130,991.70

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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.