Home / 135,654.54-187,164.27-78,289.26

Finding the Fourth Proportional to 135,654.54, 187,164.27 and 78,289.26

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Solution

The fourth proportional to 135,654.54, 187,164.27 and 78,289.26 is: 108,016.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,654.54 : 187,164.27 = 78,289.26 : x
  2. Step 2: Convert to fraction form
    135,654.54/187,164.27 = 78,289.26/x
  3. Step 3: Cross multiply
    135,654.54x = 187,164.27 × 78,289.26
  4. Step 4: Simplify right side
    135,654.54x = 14,652,952,196.74
  5. Step 5: Solve for x
    x = 14,652,952,196.74/135,654.54
  6. Step 6: Final answer
    x = 108,016.67

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1.5x scale

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.