Home / 142,734.40-214,101.60-76,379.20

Finding the Fourth Proportional to 142,734.40, 214,101.60 and 76,379.20

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Solution

The fourth proportional to 142,734.40, 214,101.60 and 76,379.20 is: 114,568.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,734.40 : 214,101.60 = 76,379.20 : x
  2. Step 2: Convert to fraction form
    142,734.40/214,101.60 = 76,379.20/x
  3. Step 3: Cross multiply
    142,734.40x = 214,101.60 × 76,379.20
  4. Step 4: Simplify right side
    142,734.40x = 16,352,908,926.72
  5. Step 5: Solve for x
    x = 16,352,908,926.72/142,734.40
  6. Step 6: Final answer
    x = 114,568.80

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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.