Home / 135,179.04-186,485.07-87,447.78

Finding the Fourth Proportional to 135,179.04, 186,485.07 and 87,447.78

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Solution

The fourth proportional to 135,179.04, 186,485.07 and 87,447.78 is: 120,637.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,179.04 : 186,485.07 = 87,447.78 : x
  2. Step 2: Convert to fraction form
    135,179.04/186,485.07 = 87,447.78/x
  3. Step 3: Cross multiply
    135,179.04x = 186,485.07 × 87,447.78
  4. Step 4: Simplify right side
    135,179.04x = 16,307,705,374.64
  5. Step 5: Solve for x
    x = 16,307,705,374.64/135,179.04
  6. Step 6: Final answer
    x = 120,637.83

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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.