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Finding the Fourth Proportional to 143,747, 215,335.28 and 67,741.46

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Solution

The fourth proportional to 143,747, 215,335.28 and 67,741.46 is: 101,477.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,747 : 215,335.28 = 67,741.46 : x
  2. Step 2: Convert to fraction form
    143,747/215,335.28 = 67,741.46/x
  3. Step 3: Cross multiply
    143,747x = 215,335.28 × 67,741.46
  4. Step 4: Simplify right side
    143,747x = 14,587,126,256.71
  5. Step 5: Solve for x
    x = 14,587,126,256.71/143,747
  6. Step 6: Final answer
    x = 101,477.78

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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.