Home / 143,007.10-197,300.92-81,709.32

Finding the Fourth Proportional to 143,007.10, 197,300.92 and 81,709.32

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Solution

The fourth proportional to 143,007.10, 197,300.92 and 81,709.32 is: 112,730.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,007.10 : 197,300.92 = 81,709.32 : x
  2. Step 2: Convert to fraction form
    143,007.10/197,300.92 = 81,709.32/x
  3. Step 3: Cross multiply
    143,007.10x = 197,300.92 × 81,709.32
  4. Step 4: Simplify right side
    143,007.10x = 16,121,324,008.57
  5. Step 5: Solve for x
    x = 16,121,324,008.57/143,007.10
  6. Step 6: Final answer
    x = 112,730.93

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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.