Home / 143,318.40-214,681.92-83,974

Finding the Fourth Proportional to 143,318.40, 214,681.92 and 83,974

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Solution

The fourth proportional to 143,318.40, 214,681.92 and 83,974 is: 125,787.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,318.40 : 214,681.92 = 83,974 : x
  2. Step 2: Convert to fraction form
    143,318.40/214,681.92 = 83,974/x
  3. Step 3: Cross multiply
    143,318.40x = 214,681.92 × 83,974
  4. Step 4: Simplify right side
    143,318.40x = 18,027,699,550.08
  5. Step 5: Solve for x
    x = 18,027,699,550.08/143,318.40
  6. Step 6: Final answer
    x = 125,787.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.