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Finding the Fourth Proportional to 143,607.40, 215,420.70 and 48,836.20

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Solution

The fourth proportional to 143,607.40, 215,420.70 and 48,836.20 is: 73,257.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,607.40 : 215,420.70 = 48,836.20 : x
  2. Step 2: Convert to fraction form
    143,607.40/215,420.70 = 48,836.20/x
  3. Step 3: Cross multiply
    143,607.40x = 215,420.70 × 48,836.20
  4. Step 4: Simplify right side
    143,607.40x = 10,520,328,389.34
  5. Step 5: Solve for x
    x = 10,520,328,389.34/143,607.40
  6. Step 6: Final answer
    x = 73,257.56

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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.