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Finding the Fourth Proportional to 135,388.80, 186,843.44 and 74,966.11

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Solution

The fourth proportional to 135,388.80, 186,843.44 and 74,966.11 is: 103,457.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,388.80 : 186,843.44 = 74,966.11 : x
  2. Step 2: Convert to fraction form
    135,388.80/186,843.44 = 74,966.11/x
  3. Step 3: Cross multiply
    135,388.80x = 186,843.44 × 74,966.11
  4. Step 4: Simplify right side
    135,388.80x = 14,006,925,596.13
  5. Step 5: Solve for x
    x = 14,006,925,596.13/135,388.80
  6. Step 6: Final answer
    x = 103,457.05

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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.