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Finding the Fourth Proportional to 135,244.30, 186,633.76 and 74,818.30

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Solution

The fourth proportional to 135,244.30, 186,633.76 and 74,818.30 is: 103,247.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,244.30 : 186,633.76 = 74,818.30 : x
  2. Step 2: Convert to fraction form
    135,244.30/186,633.76 = 74,818.30/x
  3. Step 3: Cross multiply
    135,244.30x = 186,633.76 × 74,818.30
  4. Step 4: Simplify right side
    135,244.30x = 13,963,619,338.55
  5. Step 5: Solve for x
    x = 13,963,619,338.55/135,244.30
  6. Step 6: Final answer
    x = 103,247.38

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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.