Home / 141,828.20-212,742.30-78,842.60

Finding the Fourth Proportional to 141,828.20, 212,742.30 and 78,842.60

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Solution

The fourth proportional to 141,828.20, 212,742.30 and 78,842.60 is: 118,263.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,828.20 : 212,742.30 = 78,842.60 : x
  2. Step 2: Convert to fraction form
    141,828.20/212,742.30 = 78,842.60/x
  3. Step 3: Cross multiply
    141,828.20x = 212,742.30 × 78,842.60
  4. Step 4: Simplify right side
    141,828.20x = 16,773,156,061.98
  5. Step 5: Solve for x
    x = 16,773,156,061.98/141,828.20
  6. Step 6: Final answer
    x = 118,263.90

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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.