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Finding the Fourth Proportional to 135,298.58, 186,738.45 and 81,592.34

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Solution

The fourth proportional to 135,298.58, 186,738.45 and 81,592.34 is: 112,613.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,298.58 : 186,738.45 = 81,592.34 : x
  2. Step 2: Convert to fraction form
    135,298.58/186,738.45 = 81,592.34/x
  3. Step 3: Cross multiply
    135,298.58x = 186,738.45 × 81,592.34
  4. Step 4: Simplify right side
    135,298.58x = 15,236,427,103.47
  5. Step 5: Solve for x
    x = 15,236,427,103.47/135,298.58
  6. Step 6: Final answer
    x = 112,613.36

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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.