Home / 156,619.64-216,135.24-84,999.65

Finding the Fourth Proportional to 156,619.64, 216,135.24 and 84,999.65

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Solution

The fourth proportional to 156,619.64, 216,135.24 and 84,999.65 is: 117,299.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,619.64 : 216,135.24 = 84,999.65 : x
  2. Step 2: Convert to fraction form
    156,619.64/216,135.24 = 84,999.65/x
  3. Step 3: Cross multiply
    156,619.64x = 216,135.24 × 84,999.65
  4. Step 4: Simplify right side
    156,619.64x = 18,371,419,752.67
  5. Step 5: Solve for x
    x = 18,371,419,752.67/156,619.64
  6. Step 6: Final answer
    x = 117,299.59

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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.