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Finding the Fourth Proportional to 107,840.20, 161,721.90 and 48,704.20

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Solution

The fourth proportional to 107,840.20, 161,721.90 and 48,704.20 is: 73,038.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,840.20 : 161,721.90 = 48,704.20 : x
  2. Step 2: Convert to fraction form
    107,840.20/161,721.90 = 48,704.20/x
  3. Step 3: Cross multiply
    107,840.20x = 161,721.90 × 48,704.20
  4. Step 4: Simplify right side
    107,840.20x = 7,876,535,761.98
  5. Step 5: Solve for x
    x = 7,876,535,761.98/107,840.20
  6. Step 6: Final answer
    x = 73,038.96

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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.