Home / 143,892.11-198,519.05-83,429.46

Finding the Fourth Proportional to 143,892.11, 198,519.05 and 83,429.46

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Solution

The fourth proportional to 143,892.11, 198,519.05 and 83,429.46 is: 115,102.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,892.11 : 198,519.05 = 83,429.46 : x
  2. Step 2: Convert to fraction form
    143,892.11/198,519.05 = 83,429.46/x
  3. Step 3: Cross multiply
    143,892.11x = 198,519.05 × 83,429.46
  4. Step 4: Simplify right side
    143,892.11x = 16,562,337,349.79
  5. Step 5: Solve for x
    x = 16,562,337,349.79/143,892.11
  6. Step 6: Final answer
    x = 115,102.47

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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.