Home / 135,709.86-187,264.50-75,265.36

Finding the Fourth Proportional to 135,709.86, 187,264.50 and 75,265.36

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Solution

The fourth proportional to 135,709.86, 187,264.50 and 75,265.36 is: 103,857.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,709.86 : 187,264.50 = 75,265.36 : x
  2. Step 2: Convert to fraction form
    135,709.86/187,264.50 = 75,265.36/x
  3. Step 3: Cross multiply
    135,709.86x = 187,264.50 × 75,265.36
  4. Step 4: Simplify right side
    135,709.86x = 14,094,530,007.72
  5. Step 5: Solve for x
    x = 14,094,530,007.72/135,709.86
  6. Step 6: Final answer
    x = 103,857.82

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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.