Home / 138,315.30-190,877.22-84,588.90

Finding the Fourth Proportional to 138,315.30, 190,877.22 and 84,588.90

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Solution

The fourth proportional to 138,315.30, 190,877.22 and 84,588.90 is: 116,733.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,315.30 : 190,877.22 = 84,588.90 : x
  2. Step 2: Convert to fraction form
    138,315.30/190,877.22 = 84,588.90/x
  3. Step 3: Cross multiply
    138,315.30x = 190,877.22 × 84,588.90
  4. Step 4: Simplify right side
    138,315.30x = 16,146,094,074.86
  5. Step 5: Solve for x
    x = 16,146,094,074.86/138,315.30
  6. Step 6: Final answer
    x = 116,733.97

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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.