Home / 89,359.20-133,999.20-30,178.80

Finding the Fourth Proportional to 89,359.20, 133,999.20 and 30,178.80

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Solution

The fourth proportional to 89,359.20, 133,999.20 and 30,178.80 is: 45,254.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,359.20 : 133,999.20 = 30,178.80 : x
  2. Step 2: Convert to fraction form
    89,359.20/133,999.20 = 30,178.80/x
  3. Step 3: Cross multiply
    89,359.20x = 133,999.20 × 30,178.80
  4. Step 4: Simplify right side
    89,359.20x = 4,043,935,056.96
  5. Step 5: Solve for x
    x = 4,043,935,056.96/89,359.20
  6. Step 6: Final answer
    x = 45,254.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.