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Finding the Fourth Proportional to 100,357.66, 138,498.06 and 60,063.76

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Solution

The fourth proportional to 100,357.66, 138,498.06 and 60,063.76 is: 82,890.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,357.66 : 138,498.06 = 60,063.76 : x
  2. Step 2: Convert to fraction form
    100,357.66/138,498.06 = 60,063.76/x
  3. Step 3: Cross multiply
    100,357.66x = 138,498.06 × 60,063.76
  4. Step 4: Simplify right side
    100,357.66x = 8,318,714,236.31
  5. Step 5: Solve for x
    x = 8,318,714,236.31/100,357.66
  6. Step 6: Final answer
    x = 82,890.68

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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.