Home / 134,975.25-186,265.86-78,390.27

Finding the Fourth Proportional to 134,975.25, 186,265.86 and 78,390.27

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Solution

The fourth proportional to 134,975.25, 186,265.86 and 78,390.27 is: 108,178.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,975.25 : 186,265.86 = 78,390.27 : x
  2. Step 2: Convert to fraction form
    134,975.25/186,265.86 = 78,390.27/x
  3. Step 3: Cross multiply
    134,975.25x = 186,265.86 × 78,390.27
  4. Step 4: Simplify right side
    134,975.25x = 14,601,431,057.18
  5. Step 5: Solve for x
    x = 14,601,431,057.18/134,975.25
  6. Step 6: Final answer
    x = 108,178.58

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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.