Home / 135,347.40-186,776.64-74,914.32

Finding the Fourth Proportional to 135,347.40, 186,776.64 and 74,914.32

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Solution

The fourth proportional to 135,347.40, 186,776.64 and 74,914.32 is: 103,380.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,347.40 : 186,776.64 = 74,914.32 : x
  2. Step 2: Convert to fraction form
    135,347.40/186,776.64 = 74,914.32/x
  3. Step 3: Cross multiply
    135,347.40x = 186,776.64 × 74,914.32
  4. Step 4: Simplify right side
    135,347.40x = 13,992,244,977.48
  5. Step 5: Solve for x
    x = 13,992,244,977.48/135,347.40
  6. Step 6: Final answer
    x = 103,380.23

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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.