Home / 133,212.10-183,830.52-72,781.44

Finding the Fourth Proportional to 133,212.10, 183,830.52 and 72,781.44

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Solution

The fourth proportional to 133,212.10, 183,830.52 and 72,781.44 is: 100,437.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,212.10 : 183,830.52 = 72,781.44 : x
  2. Step 2: Convert to fraction form
    133,212.10/183,830.52 = 72,781.44/x
  3. Step 3: Cross multiply
    133,212.10x = 183,830.52 × 72,781.44
  4. Step 4: Simplify right side
    133,212.10x = 13,379,449,857.44
  5. Step 5: Solve for x
    x = 13,379,449,857.44/133,212.10
  6. Step 6: Final answer
    x = 100,437.20

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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.