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Finding the Fourth Proportional to 143,532.81, 215,299.22 and 80,317.58

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Solution

The fourth proportional to 143,532.81, 215,299.22 and 80,317.58 is: 120,476.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,532.81 : 215,299.22 = 80,317.58 : x
  2. Step 2: Convert to fraction form
    143,532.81/215,299.22 = 80,317.58/x
  3. Step 3: Cross multiply
    143,532.81x = 215,299.22 × 80,317.58
  4. Step 4: Simplify right side
    143,532.81x = 17,292,310,848.20
  5. Step 5: Solve for x
    x = 17,292,310,848.20/143,532.81
  6. Step 6: Final answer
    x = 120,476.36

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1.5x scale

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.