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Finding the Fourth Proportional to 143,842.26, 215,812 and 59,642.76

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Solution

The fourth proportional to 143,842.26, 215,812 and 59,642.76 is: 89,484.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,842.26 : 215,812 = 59,642.76 : x
  2. Step 2: Convert to fraction form
    143,842.26/215,812 = 59,642.76/x
  3. Step 3: Cross multiply
    143,842.26x = 215,812 × 59,642.76
  4. Step 4: Simplify right side
    143,842.26x = 12,871,623,321.12
  5. Step 5: Solve for x
    x = 12,871,623,321.12/143,842.26
  6. Step 6: Final answer
    x = 89,484.30

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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.