Home / 102,845.66-142,000.54-80,209.94

Finding the Fourth Proportional to 102,845.66, 142,000.54 and 80,209.94

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Solution

The fourth proportional to 102,845.66, 142,000.54 and 80,209.94 is: 110,747.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,845.66 : 142,000.54 = 80,209.94 : x
  2. Step 2: Convert to fraction form
    102,845.66/142,000.54 = 80,209.94/x
  3. Step 3: Cross multiply
    102,845.66x = 142,000.54 × 80,209.94
  4. Step 4: Simplify right side
    102,845.66x = 11,389,854,793.37
  5. Step 5: Solve for x
    x = 11,389,854,793.37/102,845.66
  6. Step 6: Final answer
    x = 110,747.06

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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.