Home / 143,741.52-215,448.81-87,457.59

Finding the Fourth Proportional to 143,741.52, 215,448.81 and 87,457.59

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Solution

The fourth proportional to 143,741.52, 215,448.81 and 87,457.59 is: 131,086.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,741.52 : 215,448.81 = 87,457.59 : x
  2. Step 2: Convert to fraction form
    143,741.52/215,448.81 = 87,457.59/x
  3. Step 3: Cross multiply
    143,741.52x = 215,448.81 × 87,457.59
  4. Step 4: Simplify right side
    143,741.52x = 18,842,633,690.97
  5. Step 5: Solve for x
    x = 18,842,633,690.97/143,741.52
  6. Step 6: Final answer
    x = 131,086.92

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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.