Home / 135,057.28-186,381.02-74,629.32

Finding the Fourth Proportional to 135,057.28, 186,381.02 and 74,629.32

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Solution

The fourth proportional to 135,057.28, 186,381.02 and 74,629.32 is: 102,989.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,057.28 : 186,381.02 = 74,629.32 : x
  2. Step 2: Convert to fraction form
    135,057.28/186,381.02 = 74,629.32/x
  3. Step 3: Cross multiply
    135,057.28x = 186,381.02 × 74,629.32
  4. Step 4: Simplify right side
    135,057.28x = 13,909,488,783.51
  5. Step 5: Solve for x
    x = 13,909,488,783.51/135,057.28
  6. Step 6: Final answer
    x = 102,989.55

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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.