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Finding the Fourth Proportional to 135,360.60, 186,735.06 and 87,629.40

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Solution

The fourth proportional to 135,360.60, 186,735.06 and 87,629.40 is: 120,888.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,360.60 : 186,735.06 = 87,629.40 : x
  2. Step 2: Convert to fraction form
    135,360.60/186,735.06 = 87,629.40/x
  3. Step 3: Cross multiply
    135,360.60x = 186,735.06 × 87,629.40
  4. Step 4: Simplify right side
    135,360.60x = 16,363,481,266.76
  5. Step 5: Solve for x
    x = 16,363,481,266.76/135,360.60
  6. Step 6: Final answer
    x = 120,888.07

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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.