Home / 143,970.20-198,678.74-80,307.96

Finding the Fourth Proportional to 143,970.20, 198,678.74 and 80,307.96

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Solution

The fourth proportional to 143,970.20, 198,678.74 and 80,307.96 is: 110,824.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,970.20 : 198,678.74 = 80,307.96 : x
  2. Step 2: Convert to fraction form
    143,970.20/198,678.74 = 80,307.96/x
  3. Step 3: Cross multiply
    143,970.20x = 198,678.74 × 80,307.96
  4. Step 4: Simplify right side
    143,970.20x = 15,955,484,304.77
  5. Step 5: Solve for x
    x = 15,955,484,304.77/143,970.20
  6. Step 6: Final answer
    x = 110,824.91

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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.