Home / 135,140.36-186,492.48-74,712.54

Finding the Fourth Proportional to 135,140.36, 186,492.48 and 74,712.54

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Solution

The fourth proportional to 135,140.36, 186,492.48 and 74,712.54 is: 103,102.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,140.36 : 186,492.48 = 74,712.54 : x
  2. Step 2: Convert to fraction form
    135,140.36/186,492.48 = 74,712.54/x
  3. Step 3: Cross multiply
    135,140.36x = 186,492.48 × 74,712.54
  4. Step 4: Simplify right side
    135,140.36x = 13,933,326,871.70
  5. Step 5: Solve for x
    x = 13,933,326,871.70/135,140.36
  6. Step 6: Final answer
    x = 103,102.63

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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.