Home / 156,039.40-215,334.39-84,419.38

Finding the Fourth Proportional to 156,039.40, 215,334.39 and 84,419.38

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Solution

The fourth proportional to 156,039.40, 215,334.39 and 84,419.38 is: 116,498.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,039.40 : 215,334.39 = 84,419.38 : x
  2. Step 2: Convert to fraction form
    156,039.40/215,334.39 = 84,419.38/x
  3. Step 3: Cross multiply
    156,039.40x = 215,334.39 × 84,419.38
  4. Step 4: Simplify right side
    156,039.40x = 18,178,395,696.48
  5. Step 5: Solve for x
    x = 18,178,395,696.48/156,039.40
  6. Step 6: Final answer
    x = 116,498.75

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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.