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Finding the Fourth Proportional to 135,393.83, 186,847.08 and 74,969.77

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Solution

The fourth proportional to 135,393.83, 186,847.08 and 74,969.77 is: 103,460.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,393.83 : 186,847.08 = 74,969.77 : x
  2. Step 2: Convert to fraction form
    135,393.83/186,847.08 = 74,969.77/x
  3. Step 3: Cross multiply
    135,393.83x = 186,847.08 × 74,969.77
  4. Step 4: Simplify right side
    135,393.83x = 14,007,882,612.77
  5. Step 5: Solve for x
    x = 14,007,882,612.77/135,393.83
  6. Step 6: Final answer
    x = 103,460.27

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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.