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Finding the Fourth Proportional to 136,226.46, 187,990.71 and 76,610.46

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Solution

The fourth proportional to 136,226.46, 187,990.71 and 76,610.46 is: 105,721.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,226.46 : 187,990.71 = 76,610.46 : x
  2. Step 2: Convert to fraction form
    136,226.46/187,990.71 = 76,610.46/x
  3. Step 3: Cross multiply
    136,226.46x = 187,990.71 × 76,610.46
  4. Step 4: Simplify right side
    136,226.46x = 14,402,054,768.83
  5. Step 5: Solve for x
    x = 14,402,054,768.83/136,226.46
  6. Step 6: Final answer
    x = 105,721.42

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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.