Home / 143,382.90-197,867.37-79,720.14

Finding the Fourth Proportional to 143,382.90, 197,867.37 and 79,720.14

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Solution

The fourth proportional to 143,382.90, 197,867.37 and 79,720.14 is: 110,013.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,382.90 : 197,867.37 = 79,720.14 : x
  2. Step 2: Convert to fraction form
    143,382.90/197,867.37 = 79,720.14/x
  3. Step 3: Cross multiply
    143,382.90x = 197,867.37 × 79,720.14
  4. Step 4: Simplify right side
    143,382.90x = 15,774,014,437.83
  5. Step 5: Solve for x
    x = 15,774,014,437.83/143,382.90
  6. Step 6: Final answer
    x = 110,013.22

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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.