Home / 100,861.20-151,437.60-76,075.20

Finding the Fourth Proportional to 100,861.20, 151,437.60 and 76,075.20

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Solution

The fourth proportional to 100,861.20, 151,437.60 and 76,075.20 is: 114,222.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,861.20 : 151,437.60 = 76,075.20 : x
  2. Step 2: Convert to fraction form
    100,861.20/151,437.60 = 76,075.20/x
  3. Step 3: Cross multiply
    100,861.20x = 151,437.60 × 76,075.20
  4. Step 4: Simplify right side
    100,861.20x = 11,520,645,707.52
  5. Step 5: Solve for x
    x = 11,520,645,707.52/100,861.20
  6. Step 6: Final answer
    x = 114,222.77

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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.