Home / 135,393.04-186,858.60-85,085.20

Finding the Fourth Proportional to 135,393.04, 186,858.60 and 85,085.20

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Solution

The fourth proportional to 135,393.04, 186,858.60 and 85,085.20 is: 117,427.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,393.04 : 186,858.60 = 85,085.20 : x
  2. Step 2: Convert to fraction form
    135,393.04/186,858.60 = 85,085.20/x
  3. Step 3: Cross multiply
    135,393.04x = 186,858.60 × 85,085.20
  4. Step 4: Simplify right side
    135,393.04x = 15,898,901,352.72
  5. Step 5: Solve for x
    x = 15,898,901,352.72/135,393.04
  6. Step 6: Final answer
    x = 117,427.76

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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.