Home / 143,387.87-197,880.26-78,862.01

Finding the Fourth Proportional to 143,387.87, 197,880.26 and 78,862.01

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Solution

The fourth proportional to 143,387.87, 197,880.26 and 78,862.01 is: 108,832.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,387.87 : 197,880.26 = 78,862.01 : x
  2. Step 2: Convert to fraction form
    143,387.87/197,880.26 = 78,862.01/x
  3. Step 3: Cross multiply
    143,387.87x = 197,880.26 × 78,862.01
  4. Step 4: Simplify right side
    143,387.87x = 15,605,233,659.21
  5. Step 5: Solve for x
    x = 15,605,233,659.21/143,387.87
  6. Step 6: Final answer
    x = 108,832.32

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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.