Home / 133,136.46-183,752.06-78,686.42

Finding the Fourth Proportional to 133,136.46, 183,752.06 and 78,686.42

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Solution

The fourth proportional to 133,136.46, 183,752.06 and 78,686.42 is: 108,601.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,136.46 : 183,752.06 = 78,686.42 : x
  2. Step 2: Convert to fraction form
    133,136.46/183,752.06 = 78,686.42/x
  3. Step 3: Cross multiply
    133,136.46x = 183,752.06 × 78,686.42
  4. Step 4: Simplify right side
    133,136.46x = 14,458,790,456.83
  5. Step 5: Solve for x
    x = 14,458,790,456.83/133,136.46
  6. Step 6: Final answer
    x = 108,601.28

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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.