Home / 135,140.64-186,492.83-74,712.80

Finding the Fourth Proportional to 135,140.64, 186,492.83 and 74,712.80

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Solution

The fourth proportional to 135,140.64, 186,492.83 and 74,712.80 is: 103,102.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,140.64 : 186,492.83 = 74,712.80 : x
  2. Step 2: Convert to fraction form
    135,140.64/186,492.83 = 74,712.80/x
  3. Step 3: Cross multiply
    135,140.64x = 186,492.83 × 74,712.80
  4. Step 4: Simplify right side
    135,140.64x = 13,933,400,203.20
  5. Step 5: Solve for x
    x = 13,933,400,203.20/135,140.64
  6. Step 6: Final answer
    x = 103,102.96

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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.