Home / 89,539.20-134,114.40-79,689.60

Finding the Fourth Proportional to 89,539.20, 134,114.40 and 79,689.60

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Solution

The fourth proportional to 89,539.20, 134,114.40 and 79,689.60 is: 119,361.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,539.20 : 134,114.40 = 79,689.60 : x
  2. Step 2: Convert to fraction form
    89,539.20/134,114.40 = 79,689.60/x
  3. Step 3: Cross multiply
    89,539.20x = 134,114.40 × 79,689.60
  4. Step 4: Simplify right side
    89,539.20x = 10,687,522,890.24
  5. Step 5: Solve for x
    x = 10,687,522,890.24/89,539.20
  6. Step 6: Final answer
    x = 119,361.38

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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.