Home / 143,108.48-197,479.79-79,441.25

Finding the Fourth Proportional to 143,108.48, 197,479.79 and 79,441.25

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Solution

The fourth proportional to 143,108.48, 197,479.79 and 79,441.25 is: 109,623.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,108.48 : 197,479.79 = 79,441.25 : x
  2. Step 2: Convert to fraction form
    143,108.48/197,479.79 = 79,441.25/x
  3. Step 3: Cross multiply
    143,108.48x = 197,479.79 × 79,441.25
  4. Step 4: Simplify right side
    143,108.48x = 15,688,041,367.34
  5. Step 5: Solve for x
    x = 15,688,041,367.34/143,108.48
  6. Step 6: Final answer
    x = 109,623.42

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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.