Home / 143,809.08-198,457.53-80,150.98

Finding the Fourth Proportional to 143,809.08, 198,457.53 and 80,150.98

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Solution

The fourth proportional to 143,809.08, 198,457.53 and 80,150.98 is: 110,608.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,809.08 : 198,457.53 = 80,150.98 : x
  2. Step 2: Convert to fraction form
    143,809.08/198,457.53 = 80,150.98/x
  3. Step 3: Cross multiply
    143,809.08x = 198,457.53 × 80,150.98
  4. Step 4: Simplify right side
    143,809.08x = 15,906,565,021.74
  5. Step 5: Solve for x
    x = 15,906,565,021.74/143,809.08
  6. Step 6: Final answer
    x = 110,608.91

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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.