Home / 143,680.14-198,278.52-83,285.79

Finding the Fourth Proportional to 143,680.14, 198,278.52 and 83,285.79

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Solution

The fourth proportional to 143,680.14, 198,278.52 and 83,285.79 is: 114,934.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,680.14 : 198,278.52 = 83,285.79 : x
  2. Step 2: Convert to fraction form
    143,680.14/198,278.52 = 83,285.79/x
  3. Step 3: Cross multiply
    143,680.14x = 198,278.52 × 83,285.79
  4. Step 4: Simplify right side
    143,680.14x = 16,513,783,178.23
  5. Step 5: Solve for x
    x = 16,513,783,178.23/143,680.14
  6. Step 6: Final answer
    x = 114,934.35

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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.