Home / 143,412.15-215,129.61-43,581.06

Finding the Fourth Proportional to 143,412.15, 215,129.61 and 43,581.06

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Solution

The fourth proportional to 143,412.15, 215,129.61 and 43,581.06 is: 65,375.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,412.15 : 215,129.61 = 43,581.06 : x
  2. Step 2: Convert to fraction form
    143,412.15/215,129.61 = 43,581.06/x
  3. Step 3: Cross multiply
    143,412.15x = 215,129.61 × 43,581.06
  4. Step 4: Simplify right side
    143,412.15x = 9,375,576,441.19
  5. Step 5: Solve for x
    x = 9,375,576,441.19/143,412.15
  6. Step 6: Final answer
    x = 65,375.05

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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.