Home / 156,609.28-216,120.96-84,989.32

Finding the Fourth Proportional to 156,609.28, 216,120.96 and 84,989.32

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Solution

The fourth proportional to 156,609.28, 216,120.96 and 84,989.32 is: 117,285.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,609.28 : 216,120.96 = 84,989.32 : x
  2. Step 2: Convert to fraction form
    156,609.28/216,120.96 = 84,989.32/x
  3. Step 3: Cross multiply
    156,609.28x = 216,120.96 × 84,989.32
  4. Step 4: Simplify right side
    156,609.28x = 18,367,972,887.84
  5. Step 5: Solve for x
    x = 18,367,972,887.84/156,609.28
  6. Step 6: Final answer
    x = 117,285.34

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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.