Home / 135,502.02-186,999.75-81,786.30

Finding the Fourth Proportional to 135,502.02, 186,999.75 and 81,786.30

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Solution

The fourth proportional to 135,502.02, 186,999.75 and 81,786.30 is: 112,869.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,502.02 : 186,999.75 = 81,786.30 : x
  2. Step 2: Convert to fraction form
    135,502.02/186,999.75 = 81,786.30/x
  3. Step 3: Cross multiply
    135,502.02x = 186,999.75 × 81,786.30
  4. Step 4: Simplify right side
    135,502.02x = 15,294,017,653.43
  5. Step 5: Solve for x
    x = 15,294,017,653.43/135,502.02
  6. Step 6: Final answer
    x = 112,869.30

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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.