Home / 140,134.80-210,056.40-76,857.60

Finding the Fourth Proportional to 140,134.80, 210,056.40 and 76,857.60

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Solution

The fourth proportional to 140,134.80, 210,056.40 and 76,857.60 is: 115,206.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,134.80 : 210,056.40 = 76,857.60 : x
  2. Step 2: Convert to fraction form
    140,134.80/210,056.40 = 76,857.60/x
  3. Step 3: Cross multiply
    140,134.80x = 210,056.40 × 76,857.60
  4. Step 4: Simplify right side
    140,134.80x = 16,144,430,768.64
  5. Step 5: Solve for x
    x = 16,144,430,768.64/140,134.80
  6. Step 6: Final answer
    x = 115,206.44

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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.