Home / 135,564.32-187,035.99-78,195.93

Finding the Fourth Proportional to 135,564.32, 187,035.99 and 78,195.93

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Solution

The fourth proportional to 135,564.32, 187,035.99 and 78,195.93 is: 107,885.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,564.32 : 187,035.99 = 78,195.93 : x
  2. Step 2: Convert to fraction form
    135,564.32/187,035.99 = 78,195.93/x
  3. Step 3: Cross multiply
    135,564.32x = 187,035.99 × 78,195.93
  4. Step 4: Simplify right side
    135,564.32x = 14,625,453,181.52
  5. Step 5: Solve for x
    x = 14,625,453,181.52/135,564.32
  6. Step 6: Final answer
    x = 107,885.72

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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.