Home / 100,886.20-151,329.30-89,999.80

Finding the Fourth Proportional to 100,886.20, 151,329.30 and 89,999.80

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Solution

The fourth proportional to 100,886.20, 151,329.30 and 89,999.80 is: 134,999.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,886.20 : 151,329.30 = 89,999.80 : x
  2. Step 2: Convert to fraction form
    100,886.20/151,329.30 = 89,999.80/x
  3. Step 3: Cross multiply
    100,886.20x = 151,329.30 × 89,999.80
  4. Step 4: Simplify right side
    100,886.20x = 13,619,606,734.14
  5. Step 5: Solve for x
    x = 13,619,606,734.14/100,886.20
  6. Step 6: Final answer
    x = 134,999.70

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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.