Home / 135,165.09-186,511.55-74,727.57

Finding the Fourth Proportional to 135,165.09, 186,511.55 and 74,727.57

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Solution

The fourth proportional to 135,165.09, 186,511.55 and 74,727.57 is: 103,115.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,165.09 : 186,511.55 = 74,727.57 : x
  2. Step 2: Convert to fraction form
    135,165.09/186,511.55 = 74,727.57/x
  3. Step 3: Cross multiply
    135,165.09x = 186,511.55 × 74,727.57
  4. Step 4: Simplify right side
    135,165.09x = 13,937,554,534.80
  5. Step 5: Solve for x
    x = 13,937,554,534.80/135,165.09
  6. Step 6: Final answer
    x = 103,115.05

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1.5x scale

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.