Home / 143,001.45-197,342.03-79,339.10

Finding the Fourth Proportional to 143,001.45, 197,342.03 and 79,339.10

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Solution

The fourth proportional to 143,001.45, 197,342.03 and 79,339.10 is: 109,487.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,001.45 : 197,342.03 = 79,339.10 : x
  2. Step 2: Convert to fraction form
    143,001.45/197,342.03 = 79,339.10/x
  3. Step 3: Cross multiply
    143,001.45x = 197,342.03 × 79,339.10
  4. Step 4: Simplify right side
    143,001.45x = 15,656,938,559.02
  5. Step 5: Solve for x
    x = 15,656,938,559.02/143,001.45
  6. Step 6: Final answer
    x = 109,487.97

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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.