Home / 133,231.18-183,856.81-72,800.43

Finding the Fourth Proportional to 133,231.18, 183,856.81 and 72,800.43

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Solution

The fourth proportional to 133,231.18, 183,856.81 and 72,800.43 is: 100,463.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,231.18 : 183,856.81 = 72,800.43 : x
  2. Step 2: Convert to fraction form
    133,231.18/183,856.81 = 72,800.43/x
  3. Step 3: Cross multiply
    133,231.18x = 183,856.81 × 72,800.43
  4. Step 4: Simplify right side
    133,231.18x = 13,384,854,852.66
  5. Step 5: Solve for x
    x = 13,384,854,852.66/133,231.18
  6. Step 6: Final answer
    x = 100,463.38

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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.