Home / 143,705.74-198,313.98-83,311.40

Finding the Fourth Proportional to 143,705.74, 198,313.98 and 83,311.40

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Solution

The fourth proportional to 143,705.74, 198,313.98 and 83,311.40 is: 114,969.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,705.74 : 198,313.98 = 83,311.40 : x
  2. Step 2: Convert to fraction form
    143,705.74/198,313.98 = 83,311.40/x
  3. Step 3: Cross multiply
    143,705.74x = 198,313.98 × 83,311.40
  4. Step 4: Simplify right side
    143,705.74x = 16,521,815,313.37
  5. Step 5: Solve for x
    x = 16,521,815,313.37/143,705.74
  6. Step 6: Final answer
    x = 114,969.77

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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.