Home / 143,007.72-197,379.40-82,588.20

Finding the Fourth Proportional to 143,007.72, 197,379.40 and 82,588.20

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Solution

The fourth proportional to 143,007.72, 197,379.40 and 82,588.20 is: 113,988.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,007.72 : 197,379.40 = 82,588.20 : x
  2. Step 2: Convert to fraction form
    143,007.72/197,379.40 = 82,588.20/x
  3. Step 3: Cross multiply
    143,007.72x = 197,379.40 × 82,588.20
  4. Step 4: Simplify right side
    143,007.72x = 16,301,209,363.08
  5. Step 5: Solve for x
    x = 16,301,209,363.08/143,007.72
  6. Step 6: Final answer
    x = 113,988.32

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1.5x scale

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.