Home / 135,072.16-186,399.12-74,641.12

Finding the Fourth Proportional to 135,072.16, 186,399.12 and 74,641.12

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Solution

The fourth proportional to 135,072.16, 186,399.12 and 74,641.12 is: 103,004.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,072.16 : 186,399.12 = 74,641.12 : x
  2. Step 2: Convert to fraction form
    135,072.16/186,399.12 = 74,641.12/x
  3. Step 3: Cross multiply
    135,072.16x = 186,399.12 × 74,641.12
  4. Step 4: Simplify right side
    135,072.16x = 13,913,039,083.81
  5. Step 5: Solve for x
    x = 13,913,039,083.81/135,072.16
  6. Step 6: Final answer
    x = 103,004.49

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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.