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Finding the Fourth Proportional to 100,091.71, 138,122.45 and 59,827.68

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Solution

The fourth proportional to 100,091.71, 138,122.45 and 59,827.68 is: 82,559.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,091.71 : 138,122.45 = 59,827.68 : x
  2. Step 2: Convert to fraction form
    100,091.71/138,122.45 = 59,827.68/x
  3. Step 3: Cross multiply
    100,091.71x = 138,122.45 × 59,827.68
  4. Step 4: Simplify right side
    100,091.71x = 8,263,545,739.42
  5. Step 5: Solve for x
    x = 8,263,545,739.42/100,091.71
  6. Step 6: Final answer
    x = 82,559.74

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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.