Home / 143,802.70-198,449.67-80,138.32

Finding the Fourth Proportional to 143,802.70, 198,449.67 and 80,138.32

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Solution

The fourth proportional to 143,802.70, 198,449.67 and 80,138.32 is: 110,591.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,802.70 : 198,449.67 = 80,138.32 : x
  2. Step 2: Convert to fraction form
    143,802.70/198,449.67 = 80,138.32/x
  3. Step 3: Cross multiply
    143,802.70x = 198,449.67 × 80,138.32
  4. Step 4: Simplify right side
    143,802.70x = 15,903,423,158.35
  5. Step 5: Solve for x
    x = 15,903,423,158.35/143,802.70
  6. Step 6: Final answer
    x = 110,591.96

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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.