Home / 143,701.28-198,307.81-83,306.93

Finding the Fourth Proportional to 143,701.28, 198,307.81 and 83,306.93

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Solution

The fourth proportional to 143,701.28, 198,307.81 and 83,306.93 is: 114,963.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,701.28 : 198,307.81 = 83,306.93 : x
  2. Step 2: Convert to fraction form
    143,701.28/198,307.81 = 83,306.93/x
  3. Step 3: Cross multiply
    143,701.28x = 198,307.81 × 83,306.93
  4. Step 4: Simplify right side
    143,701.28x = 16,520,414,846.12
  5. Step 5: Solve for x
    x = 16,520,414,846.12/143,701.28
  6. Step 6: Final answer
    x = 114,963.59

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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.