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Finding the Fourth Proportional to 143,715.91, 215,563.84 and 53,741.51

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Solution

The fourth proportional to 143,715.91, 215,563.84 and 53,741.51 is: 80,608.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,715.91 : 215,563.84 = 53,741.51 : x
  2. Step 2: Convert to fraction form
    143,715.91/215,563.84 = 53,741.51/x
  3. Step 3: Cross multiply
    143,715.91x = 215,563.84 × 53,741.51
  4. Step 4: Simplify right side
    143,715.91x = 11,584,725,994.29
  5. Step 5: Solve for x
    x = 11,584,725,994.29/143,715.91
  6. Step 6: Final answer
    x = 80,608.52

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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.