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Finding the Fourth Proportional to 136,570.64, 188,466.80 and 79,221.56

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Solution

The fourth proportional to 136,570.64, 188,466.80 and 79,221.56 is: 109,325.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,570.64 : 188,466.80 = 79,221.56 : x
  2. Step 2: Convert to fraction form
    136,570.64/188,466.80 = 79,221.56/x
  3. Step 3: Cross multiply
    136,570.64x = 188,466.80 × 79,221.56
  4. Step 4: Simplify right side
    136,570.64x = 14,930,633,904.21
  5. Step 5: Solve for x
    x = 14,930,633,904.21/136,570.64
  6. Step 6: Final answer
    x = 109,325.36

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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.