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Finding the Fourth Proportional to 136,562, 188,456.36 and 76,136.44

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Solution

The fourth proportional to 136,562, 188,456.36 and 76,136.44 is: 105,068.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,562 : 188,456.36 = 76,136.44 : x
  2. Step 2: Convert to fraction form
    136,562/188,456.36 = 76,136.44/x
  3. Step 3: Cross multiply
    136,562x = 188,456.36 × 76,136.44
  4. Step 4: Simplify right side
    136,562x = 14,348,396,345.76
  5. Step 5: Solve for x
    x = 14,348,396,345.76/136,562
  6. Step 6: Final answer
    x = 105,068.73

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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.