Home / 143,970.66-198,679.83-80,312.58

Finding the Fourth Proportional to 143,970.66, 198,679.83 and 80,312.58

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Solution

The fourth proportional to 143,970.66, 198,679.83 and 80,312.58 is: 110,831.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,970.66 : 198,679.83 = 80,312.58 : x
  2. Step 2: Convert to fraction form
    143,970.66/198,679.83 = 80,312.58/x
  3. Step 3: Cross multiply
    143,970.66x = 198,679.83 × 80,312.58
  4. Step 4: Simplify right side
    143,970.66x = 15,956,489,741.26
  5. Step 5: Solve for x
    x = 15,956,489,741.26/143,970.66
  6. Step 6: Final answer
    x = 110,831.54

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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.