Home / 144,120.20-198,885.38-80,457.44

Finding the Fourth Proportional to 144,120.20, 198,885.38 and 80,457.44

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Solution

The fourth proportional to 144,120.20, 198,885.38 and 80,457.44 is: 111,030.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,120.20 : 198,885.38 = 80,457.44 : x
  2. Step 2: Convert to fraction form
    144,120.20/198,885.38 = 80,457.44/x
  3. Step 3: Cross multiply
    144,120.20x = 198,885.38 × 80,457.44
  4. Step 4: Simplify right side
    144,120.20x = 16,001,807,131.51
  5. Step 5: Solve for x
    x = 16,001,807,131.51/144,120.20
  6. Step 6: Final answer
    x = 111,030.98

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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.