Home / 112,780.56-169,171.08-45,343.68

Finding the Fourth Proportional to 112,780.56, 169,171.08 and 45,343.68

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Solution

The fourth proportional to 112,780.56, 169,171.08 and 45,343.68 is: 68,015.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,780.56 : 169,171.08 = 45,343.68 : x
  2. Step 2: Convert to fraction form
    112,780.56/169,171.08 = 45,343.68/x
  3. Step 3: Cross multiply
    112,780.56x = 169,171.08 × 45,343.68
  4. Step 4: Simplify right side
    112,780.56x = 7,670,839,316.77
  5. Step 5: Solve for x
    x = 7,670,839,316.77/112,780.56
  6. Step 6: Final answer
    x = 68,015.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.