Home / 143,358.36-197,847.90-86,783.64

Finding the Fourth Proportional to 143,358.36, 197,847.90 and 86,783.64

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Solution

The fourth proportional to 143,358.36, 197,847.90 and 86,783.64 is: 119,769.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,358.36 : 197,847.90 = 86,783.64 : x
  2. Step 2: Convert to fraction form
    143,358.36/197,847.90 = 86,783.64/x
  3. Step 3: Cross multiply
    143,358.36x = 197,847.90 × 86,783.64
  4. Step 4: Simplify right side
    143,358.36x = 17,169,960,928.36
  5. Step 5: Solve for x
    x = 17,169,960,928.36/143,358.36
  6. Step 6: Final answer
    x = 119,769.51

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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.