Home / 101,998.20-152,997.30-78,670.20

Finding the Fourth Proportional to 101,998.20, 152,997.30 and 78,670.20

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Solution

The fourth proportional to 101,998.20, 152,997.30 and 78,670.20 is: 118,005.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,998.20 : 152,997.30 = 78,670.20 : x
  2. Step 2: Convert to fraction form
    101,998.20/152,997.30 = 78,670.20/x
  3. Step 3: Cross multiply
    101,998.20x = 152,997.30 × 78,670.20
  4. Step 4: Simplify right side
    101,998.20x = 12,036,328,190.46
  5. Step 5: Solve for x
    x = 12,036,328,190.46/101,998.20
  6. Step 6: Final answer
    x = 118,005.30

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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.