Home / 143,102.50-197,471.55-79,435.28

Finding the Fourth Proportional to 143,102.50, 197,471.55 and 79,435.28

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Solution

The fourth proportional to 143,102.50, 197,471.55 and 79,435.28 is: 109,615.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,102.50 : 197,471.55 = 79,435.28 : x
  2. Step 2: Convert to fraction form
    143,102.50/197,471.55 = 79,435.28/x
  3. Step 3: Cross multiply
    143,102.50x = 197,471.55 × 79,435.28
  4. Step 4: Simplify right side
    143,102.50x = 15,686,208,657.85
  5. Step 5: Solve for x
    x = 15,686,208,657.85/143,102.50
  6. Step 6: Final answer
    x = 109,615.20

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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.