Home / 133,118.06-183,698.10-72,687.62

Finding the Fourth Proportional to 133,118.06, 183,698.10 and 72,687.62

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Solution

The fourth proportional to 133,118.06, 183,698.10 and 72,687.62 is: 100,306.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,118.06 : 183,698.10 = 72,687.62 : x
  2. Step 2: Convert to fraction form
    133,118.06/183,698.10 = 72,687.62/x
  3. Step 3: Cross multiply
    133,118.06x = 183,698.10 × 72,687.62
  4. Step 4: Simplify right side
    133,118.06x = 13,352,577,687.52
  5. Step 5: Solve for x
    x = 13,352,577,687.52/133,118.06
  6. Step 6: Final answer
    x = 100,306.28

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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.