Home / 156,609.33-216,121.01-84,989.36

Finding the Fourth Proportional to 156,609.33, 216,121.01 and 84,989.36

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Solution

The fourth proportional to 156,609.33, 216,121.01 and 84,989.36 is: 117,285.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,609.33 : 216,121.01 = 84,989.36 : x
  2. Step 2: Convert to fraction form
    156,609.33/216,121.01 = 84,989.36/x
  3. Step 3: Cross multiply
    156,609.33x = 216,121.01 × 84,989.36
  4. Step 4: Simplify right side
    156,609.33x = 18,367,984,816.90
  5. Step 5: Solve for x
    x = 18,367,984,816.90/156,609.33
  6. Step 6: Final answer
    x = 117,285.38

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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.