Home / 133,131.60-183,714.75-72,690.59

Finding the Fourth Proportional to 133,131.60, 183,714.75 and 72,690.59

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Solution

The fourth proportional to 133,131.60, 183,714.75 and 72,690.59 is: 100,309.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,131.60 : 183,714.75 = 72,690.59 : x
  2. Step 2: Convert to fraction form
    133,131.60/183,714.75 = 72,690.59/x
  3. Step 3: Cross multiply
    133,131.60x = 183,714.75 × 72,690.59
  4. Step 4: Simplify right side
    133,131.60x = 13,354,332,650.63
  5. Step 5: Solve for x
    x = 13,354,332,650.63/133,131.60
  6. Step 6: Final answer
    x = 100,309.26

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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.