Home / 135,041.56-186,368.22-74,617.42

Finding the Fourth Proportional to 135,041.56, 186,368.22 and 74,617.42

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Solution

The fourth proportional to 135,041.56, 186,368.22 and 74,617.42 is: 102,978.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,041.56 : 186,368.22 = 74,617.42 : x
  2. Step 2: Convert to fraction form
    135,041.56/186,368.22 = 74,617.42/x
  3. Step 3: Cross multiply
    135,041.56x = 186,368.22 × 74,617.42
  4. Step 4: Simplify right side
    135,041.56x = 13,906,315,746.39
  5. Step 5: Solve for x
    x = 13,906,315,746.39/135,041.56
  6. Step 6: Final answer
    x = 102,978.04

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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.