Home / 135,512.99-187,002.91-78,154.71

Finding the Fourth Proportional to 135,512.99, 187,002.91 and 78,154.71

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Solution

The fourth proportional to 135,512.99, 187,002.91 and 78,154.71 is: 107,850.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,512.99 : 187,002.91 = 78,154.71 : x
  2. Step 2: Convert to fraction form
    135,512.99/187,002.91 = 78,154.71/x
  3. Step 3: Cross multiply
    135,512.99x = 187,002.91 × 78,154.71
  4. Step 4: Simplify right side
    135,512.99x = 14,615,157,596.64
  5. Step 5: Solve for x
    x = 14,615,157,596.64/135,512.99
  6. Step 6: Final answer
    x = 107,850.60

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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.