Home / 134,878.87-186,132.86-74,449.53

Finding the Fourth Proportional to 134,878.87, 186,132.86 and 74,449.53

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Solution

The fourth proportional to 134,878.87, 186,132.86 and 74,449.53 is: 102,740.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,878.87 : 186,132.86 = 74,449.53 : x
  2. Step 2: Convert to fraction form
    134,878.87/186,132.86 = 74,449.53/x
  3. Step 3: Cross multiply
    134,878.87x = 186,132.86 × 74,449.53
  4. Step 4: Simplify right side
    134,878.87x = 13,857,503,944.56
  5. Step 5: Solve for x
    x = 13,857,503,944.56/134,878.87
  6. Step 6: Final answer
    x = 102,740.36

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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.