Home / 143,700.64-198,306.76-83,306.28

Finding the Fourth Proportional to 143,700.64, 198,306.76 and 83,306.28

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Solution

The fourth proportional to 143,700.64, 198,306.76 and 83,306.28 is: 114,962.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,700.64 : 198,306.76 = 83,306.28 : x
  2. Step 2: Convert to fraction form
    143,700.64/198,306.76 = 83,306.28/x
  3. Step 3: Cross multiply
    143,700.64x = 198,306.76 × 83,306.28
  4. Step 4: Simplify right side
    143,700.64x = 16,520,198,474.45
  5. Step 5: Solve for x
    x = 16,520,198,474.45/143,700.64
  6. Step 6: Final answer
    x = 114,962.59

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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.