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Finding the Fourth Proportional to 135,999.78, 187,601.48 and 84,923.84

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Solution

The fourth proportional to 135,999.78, 187,601.48 and 84,923.84 is: 117,146.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,999.78 : 187,601.48 = 84,923.84 : x
  2. Step 2: Convert to fraction form
    135,999.78/187,601.48 = 84,923.84/x
  3. Step 3: Cross multiply
    135,999.78x = 187,601.48 × 84,923.84
  4. Step 4: Simplify right side
    135,999.78x = 15,931,837,177.66
  5. Step 5: Solve for x
    x = 15,931,837,177.66/135,999.78
  6. Step 6: Final answer
    x = 117,146.05

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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.