Home / 137,826.48-190,221.36-84,142.80

Finding the Fourth Proportional to 137,826.48, 190,221.36 and 84,142.80

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Solution

The fourth proportional to 137,826.48, 190,221.36 and 84,142.80 is: 116,129.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,826.48 : 190,221.36 = 84,142.80 : x
  2. Step 2: Convert to fraction form
    137,826.48/190,221.36 = 84,142.80/x
  3. Step 3: Cross multiply
    137,826.48x = 190,221.36 × 84,142.80
  4. Step 4: Simplify right side
    137,826.48x = 16,005,757,850.21
  5. Step 5: Solve for x
    x = 16,005,757,850.21/137,826.48
  6. Step 6: Final answer
    x = 116,129.77

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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.