Home / 112,883.56-155,781-61,900.96

Finding the Fourth Proportional to 112,883.56, 155,781 and 61,900.96

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Solution

The fourth proportional to 112,883.56, 155,781 and 61,900.96 is: 85,424.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,883.56 : 155,781 = 61,900.96 : x
  2. Step 2: Convert to fraction form
    112,883.56/155,781 = 61,900.96/x
  3. Step 3: Cross multiply
    112,883.56x = 155,781 × 61,900.96
  4. Step 4: Simplify right side
    112,883.56x = 9,642,993,449.76
  5. Step 5: Solve for x
    x = 9,642,993,449.76/112,883.56
  6. Step 6: Final answer
    x = 85,424.25

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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.