Home / 133,109.43-183,690.10-72,680.04

Finding the Fourth Proportional to 133,109.43, 183,690.10 and 72,680.04

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Solution

The fourth proportional to 133,109.43, 183,690.10 and 72,680.04 is: 100,297.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,109.43 : 183,690.10 = 72,680.04 : x
  2. Step 2: Convert to fraction form
    133,109.43/183,690.10 = 72,680.04/x
  3. Step 3: Cross multiply
    133,109.43x = 183,690.10 × 72,680.04
  4. Step 4: Simplify right side
    133,109.43x = 13,350,603,497.63
  5. Step 5: Solve for x
    x = 13,350,603,497.63/133,109.43
  6. Step 6: Final answer
    x = 100,297.95

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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.