Home / 135,045.80-186,366.97-74,620.36

Finding the Fourth Proportional to 135,045.80, 186,366.97 and 74,620.36

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Solution

The fourth proportional to 135,045.80, 186,366.97 and 74,620.36 is: 102,978.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,045.80 : 186,366.97 = 74,620.36 : x
  2. Step 2: Convert to fraction form
    135,045.80/186,366.97 = 74,620.36/x
  3. Step 3: Cross multiply
    135,045.80x = 186,366.97 × 74,620.36
  4. Step 4: Simplify right side
    135,045.80x = 13,906,769,088.57
  5. Step 5: Solve for x
    x = 13,906,769,088.57/135,045.80
  6. Step 6: Final answer
    x = 102,978.17

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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.