Home / 142,234.20-196,281.72-78,567.84

Finding the Fourth Proportional to 142,234.20, 196,281.72 and 78,567.84

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Solution

The fourth proportional to 142,234.20, 196,281.72 and 78,567.84 is: 108,422.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,234.20 : 196,281.72 = 78,567.84 : x
  2. Step 2: Convert to fraction form
    142,234.20/196,281.72 = 78,567.84/x
  3. Step 3: Cross multiply
    142,234.20x = 196,281.72 × 78,567.84
  4. Step 4: Simplify right side
    142,234.20x = 15,421,430,771.88
  5. Step 5: Solve for x
    x = 15,421,430,771.88/142,234.20
  6. Step 6: Final answer
    x = 108,422.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.