Home / 143,402.72-197,894.28-79,739.84

Finding the Fourth Proportional to 143,402.72, 197,894.28 and 79,739.84

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Solution

The fourth proportional to 143,402.72, 197,894.28 and 79,739.84 is: 110,040.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,402.72 : 197,894.28 = 79,739.84 : x
  2. Step 2: Convert to fraction form
    143,402.72/197,894.28 = 79,739.84/x
  3. Step 3: Cross multiply
    143,402.72x = 197,894.28 × 79,739.84
  4. Step 4: Simplify right side
    143,402.72x = 15,780,058,224.12
  5. Step 5: Solve for x
    x = 15,780,058,224.12/143,402.72
  6. Step 6: Final answer
    x = 110,040.16

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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.