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Finding the Fourth Proportional to 143,679.65, 198,277.88 and 83,285.34

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Solution

The fourth proportional to 143,679.65, 198,277.88 and 83,285.34 is: 114,933.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,679.65 : 198,277.88 = 83,285.34 : x
  2. Step 2: Convert to fraction form
    143,679.65/198,277.88 = 83,285.34/x
  3. Step 3: Cross multiply
    143,679.65x = 198,277.88 × 83,285.34
  4. Step 4: Simplify right side
    143,679.65x = 16,513,639,490.31
  5. Step 5: Solve for x
    x = 16,513,639,490.31/143,679.65
  6. Step 6: Final answer
    x = 114,933.74

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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.