Home / 452,021.20-678,031.80-115,061.20

Finding the Fourth Proportional to 452,021.20, 678,031.80 and 115,061.20

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Solution

The fourth proportional to 452,021.20, 678,031.80 and 115,061.20 is: 172,591.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,021.20 : 678,031.80 = 115,061.20 : x
  2. Step 2: Convert to fraction form
    452,021.20/678,031.80 = 115,061.20/x
  3. Step 3: Cross multiply
    452,021.20x = 678,031.80 × 115,061.20
  4. Step 4: Simplify right side
    452,021.20x = 78,015,152,546.16
  5. Step 5: Solve for x
    x = 78,015,152,546.16/452,021.20
  6. Step 6: Final answer
    x = 172,591.80

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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.