Home / 133,219.78-183,841.10-72,789.10

Finding the Fourth Proportional to 133,219.78, 183,841.10 and 72,789.10

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Solution

The fourth proportional to 133,219.78, 183,841.10 and 72,789.10 is: 100,447.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,219.78 : 183,841.10 = 72,789.10 : x
  2. Step 2: Convert to fraction form
    133,219.78/183,841.10 = 72,789.10/x
  3. Step 3: Cross multiply
    133,219.78x = 183,841.10 × 72,789.10
  4. Step 4: Simplify right side
    133,219.78x = 13,381,628,212.01
  5. Step 5: Solve for x
    x = 13,381,628,212.01/133,219.78
  6. Step 6: Final answer
    x = 100,447.76

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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.