Home / 134,878.56-186,131.40-74,449.19

Finding the Fourth Proportional to 134,878.56, 186,131.40 and 74,449.19

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Solution

The fourth proportional to 134,878.56, 186,131.40 and 74,449.19 is: 102,739.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,878.56 : 186,131.40 = 74,449.19 : x
  2. Step 2: Convert to fraction form
    134,878.56/186,131.40 = 74,449.19/x
  3. Step 3: Cross multiply
    134,878.56x = 186,131.40 × 74,449.19
  4. Step 4: Simplify right side
    134,878.56x = 13,857,331,032.91
  5. Step 5: Solve for x
    x = 13,857,331,032.91/134,878.56
  6. Step 6: Final answer
    x = 102,739.32

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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.