Home / 142,050.20-213,075.30-79,712.60

Finding the Fourth Proportional to 142,050.20, 213,075.30 and 79,712.60

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Solution

The fourth proportional to 142,050.20, 213,075.30 and 79,712.60 is: 119,568.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,050.20 : 213,075.30 = 79,712.60 : x
  2. Step 2: Convert to fraction form
    142,050.20/213,075.30 = 79,712.60/x
  3. Step 3: Cross multiply
    142,050.20x = 213,075.30 × 79,712.60
  4. Step 4: Simplify right side
    142,050.20x = 16,984,786,158.78
  5. Step 5: Solve for x
    x = 16,984,786,158.78/142,050.20
  6. Step 6: Final answer
    x = 119,568.90

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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.