Home / 89,139.20-133,446.40-65,869.44

Finding the Fourth Proportional to 89,139.20, 133,446.40 and 65,869.44

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Solution

The fourth proportional to 89,139.20, 133,446.40 and 65,869.44 is: 98,610.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,139.20 : 133,446.40 = 65,869.44 : x
  2. Step 2: Convert to fraction form
    89,139.20/133,446.40 = 65,869.44/x
  3. Step 3: Cross multiply
    89,139.20x = 133,446.40 × 65,869.44
  4. Step 4: Simplify right side
    89,139.20x = 8,790,039,638.02
  5. Step 5: Solve for x
    x = 8,790,039,638.02/89,139.20
  6. Step 6: Final answer
    x = 98,610.26

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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.