Home / 135,805.40-187,410.08-75,376.57

Finding the Fourth Proportional to 135,805.40, 187,410.08 and 75,376.57

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Solution

The fourth proportional to 135,805.40, 187,410.08 and 75,376.57 is: 104,018.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,805.40 : 187,410.08 = 75,376.57 : x
  2. Step 2: Convert to fraction form
    135,805.40/187,410.08 = 75,376.57/x
  3. Step 3: Cross multiply
    135,805.40x = 187,410.08 × 75,376.57
  4. Step 4: Simplify right side
    135,805.40x = 14,126,328,168.42
  5. Step 5: Solve for x
    x = 14,126,328,168.42/135,805.40
  6. Step 6: Final answer
    x = 104,018.90

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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.