Home / 133,120.31-183,705.98-72,691.20

Finding the Fourth Proportional to 133,120.31, 183,705.98 and 72,691.20

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Solution

The fourth proportional to 133,120.31, 183,705.98 and 72,691.20 is: 100,313.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,120.31 : 183,705.98 = 72,691.20 : x
  2. Step 2: Convert to fraction form
    133,120.31/183,705.98 = 72,691.20/x
  3. Step 3: Cross multiply
    133,120.31x = 183,705.98 × 72,691.20
  4. Step 4: Simplify right side
    133,120.31x = 13,353,807,769.92
  5. Step 5: Solve for x
    x = 13,353,807,769.92/133,120.31
  6. Step 6: Final answer
    x = 100,313.83

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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.