Home / 143,538.12-215,315.34-43,701.60

Finding the Fourth Proportional to 143,538.12, 215,315.34 and 43,701.60

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Solution

The fourth proportional to 143,538.12, 215,315.34 and 43,701.60 is: 65,554.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,538.12 : 215,315.34 = 43,701.60 : x
  2. Step 2: Convert to fraction form
    143,538.12/215,315.34 = 43,701.60/x
  3. Step 3: Cross multiply
    143,538.12x = 215,315.34 × 43,701.60
  4. Step 4: Simplify right side
    143,538.12x = 9,409,624,862.54
  5. Step 5: Solve for x
    x = 9,409,624,862.54/143,538.12
  6. Step 6: Final answer
    x = 65,554.88

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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.