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Finding the Fourth Proportional to 136,437, 188,295.80 and 79,848.42

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Solution

The fourth proportional to 136,437, 188,295.80 and 79,848.42 is: 110,198.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,437 : 188,295.80 = 79,848.42 : x
  2. Step 2: Convert to fraction form
    136,437/188,295.80 = 79,848.42/x
  3. Step 3: Cross multiply
    136,437x = 188,295.80 × 79,848.42
  4. Step 4: Simplify right side
    136,437x = 15,035,121,723.39
  5. Step 5: Solve for x
    x = 15,035,121,723.39/136,437
  6. Step 6: Final answer
    x = 110,198.27

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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.