Home / 143,353.49-215,005.09-54,612.32

Finding the Fourth Proportional to 143,353.49, 215,005.09 and 54,612.32

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Solution

The fourth proportional to 143,353.49, 215,005.09 and 54,612.32 is: 81,908.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,353.49 : 215,005.09 = 54,612.32 : x
  2. Step 2: Convert to fraction form
    143,353.49/215,005.09 = 54,612.32/x
  3. Step 3: Cross multiply
    143,353.49x = 215,005.09 × 54,612.32
  4. Step 4: Simplify right side
    143,353.49x = 11,741,926,776.71
  5. Step 5: Solve for x
    x = 11,741,926,776.71/143,353.49
  6. Step 6: Final answer
    x = 81,908.90

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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.