Home / 84,665.40-126,998.10-76,500.60

Finding the Fourth Proportional to 84,665.40, 126,998.10 and 76,500.60

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Solution

The fourth proportional to 84,665.40, 126,998.10 and 76,500.60 is: 114,750.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,665.40 : 126,998.10 = 76,500.60 : x
  2. Step 2: Convert to fraction form
    84,665.40/126,998.10 = 76,500.60/x
  3. Step 3: Cross multiply
    84,665.40x = 126,998.10 × 76,500.60
  4. Step 4: Simplify right side
    84,665.40x = 9,715,430,848.86
  5. Step 5: Solve for x
    x = 9,715,430,848.86/84,665.40
  6. Step 6: Final answer
    x = 114,750.90

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1.5x scale

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.