Home / 143,073.18-197,437.20-79,409.34

Finding the Fourth Proportional to 143,073.18, 197,437.20 and 79,409.34

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Solution

The fourth proportional to 143,073.18, 197,437.20 and 79,409.34 is: 109,582.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,073.18 : 197,437.20 = 79,409.34 : x
  2. Step 2: Convert to fraction form
    143,073.18/197,437.20 = 79,409.34/x
  3. Step 3: Cross multiply
    143,073.18x = 197,437.20 × 79,409.34
  4. Step 4: Simplify right side
    143,073.18x = 15,678,357,743.45
  5. Step 5: Solve for x
    x = 15,678,357,743.45/143,073.18
  6. Step 6: Final answer
    x = 109,582.79

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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.