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Finding the Fourth Proportional to 143,783.44, 215,347.11 and 126,965.50

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Solution

The fourth proportional to 143,783.44, 215,347.11 and 126,965.50 is: 190,158.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,783.44 : 215,347.11 = 126,965.50 : x
  2. Step 2: Convert to fraction form
    143,783.44/215,347.11 = 126,965.50/x
  3. Step 3: Cross multiply
    143,783.44x = 215,347.11 × 126,965.50
  4. Step 4: Simplify right side
    143,783.44x = 27,341,653,494.71
  5. Step 5: Solve for x
    x = 27,341,653,494.71/143,783.44
  6. Step 6: Final answer
    x = 190,158.57

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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.