Home / 138,772.02-191,505.27-75,109.68

Finding the Fourth Proportional to 138,772.02, 191,505.27 and 75,109.68

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Solution

The fourth proportional to 138,772.02, 191,505.27 and 75,109.68 is: 103,651.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,772.02 : 191,505.27 = 75,109.68 : x
  2. Step 2: Convert to fraction form
    138,772.02/191,505.27 = 75,109.68/x
  3. Step 3: Cross multiply
    138,772.02x = 191,505.27 × 75,109.68
  4. Step 4: Simplify right side
    138,772.02x = 14,383,899,548.01
  5. Step 5: Solve for x
    x = 14,383,899,548.01/138,772.02
  6. Step 6: Final answer
    x = 103,651.29

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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.