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Finding the Fourth Proportional to 144,115.59, 198,871.23 and 80,457.42

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Solution

The fourth proportional to 144,115.59, 198,871.23 and 80,457.42 is: 111,026.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,115.59 : 198,871.23 = 80,457.42 : x
  2. Step 2: Convert to fraction form
    144,115.59/198,871.23 = 80,457.42/x
  3. Step 3: Cross multiply
    144,115.59x = 198,871.23 × 80,457.42
  4. Step 4: Simplify right side
    144,115.59x = 16,000,666,078.03
  5. Step 5: Solve for x
    x = 16,000,666,078.03/144,115.59
  6. Step 6: Final answer
    x = 111,026.61

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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.