Home / 143,702.28-198,309.19-83,307.93

Finding the Fourth Proportional to 143,702.28, 198,309.19 and 83,307.93

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Solution

The fourth proportional to 143,702.28, 198,309.19 and 83,307.93 is: 114,964.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,702.28 : 198,309.19 = 83,307.93 : x
  2. Step 2: Convert to fraction form
    143,702.28/198,309.19 = 83,307.93/x
  3. Step 3: Cross multiply
    143,702.28x = 198,309.19 × 83,307.93
  4. Step 4: Simplify right side
    143,702.28x = 16,520,728,118.88
  5. Step 5: Solve for x
    x = 16,520,728,118.88/143,702.28
  6. Step 6: Final answer
    x = 114,964.97

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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.