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Finding the Fourth Proportional to 134,805.80, 186,031.49 and 74,380.21

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Solution

The fourth proportional to 134,805.80, 186,031.49 and 74,380.21 is: 102,644.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,805.80 : 186,031.49 = 74,380.21 : x
  2. Step 2: Convert to fraction form
    134,805.80/186,031.49 = 74,380.21/x
  3. Step 3: Cross multiply
    134,805.80x = 186,031.49 × 74,380.21
  4. Step 4: Simplify right side
    134,805.80x = 13,837,060,455.83
  5. Step 5: Solve for x
    x = 13,837,060,455.83/134,805.80
  6. Step 6: Final answer
    x = 102,644.40

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.