Home / 78,189.18-107,821.98-69,548.10

Finding the Fourth Proportional to 78,189.18, 107,821.98 and 69,548.10

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Solution

The fourth proportional to 78,189.18, 107,821.98 and 69,548.10 is: 95,906.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,189.18 : 107,821.98 = 69,548.10 : x
  2. Step 2: Convert to fraction form
    78,189.18/107,821.98 = 69,548.10/x
  3. Step 3: Cross multiply
    78,189.18x = 107,821.98 × 69,548.10
  4. Step 4: Simplify right side
    78,189.18x = 7,498,813,847.24
  5. Step 5: Solve for x
    x = 7,498,813,847.24/78,189.18
  6. Step 6: Final answer
    x = 95,906.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.