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Finding the Fourth Proportional to 124,422.80, 186,634.20 and 74,656.40

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Solution

The fourth proportional to 124,422.80, 186,634.20 and 74,656.40 is: 111,984.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,422.80 : 186,634.20 = 74,656.40 : x
  2. Step 2: Convert to fraction form
    124,422.80/186,634.20 = 74,656.40/x
  3. Step 3: Cross multiply
    124,422.80x = 186,634.20 × 74,656.40
  4. Step 4: Simplify right side
    124,422.80x = 13,933,437,488.88
  5. Step 5: Solve for x
    x = 13,933,437,488.88/124,422.80
  6. Step 6: Final answer
    x = 111,984.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.