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Finding the Fourth Proportional to 187,396.98, 280,645.05 and 107,191.80

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Solution

The fourth proportional to 187,396.98, 280,645.05 and 107,191.80 is: 160,530.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,396.98 : 280,645.05 = 107,191.80 : x
  2. Step 2: Convert to fraction form
    187,396.98/280,645.05 = 107,191.80/x
  3. Step 3: Cross multiply
    187,396.98x = 280,645.05 × 107,191.80
  4. Step 4: Simplify right side
    187,396.98x = 30,082,848,070.59
  5. Step 5: Solve for x
    x = 30,082,848,070.59/187,396.98
  6. Step 6: Final answer
    x = 160,530.06

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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.