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Finding the Fourth Proportional to 112,395.93, 155,101.80 and 61,410.43

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Solution

The fourth proportional to 112,395.93, 155,101.80 and 61,410.43 is: 84,743.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,395.93 : 155,101.80 = 61,410.43 : x
  2. Step 2: Convert to fraction form
    112,395.93/155,101.80 = 61,410.43/x
  3. Step 3: Cross multiply
    112,395.93x = 155,101.80 × 61,410.43
  4. Step 4: Simplify right side
    112,395.93x = 9,524,868,231.77
  5. Step 5: Solve for x
    x = 9,524,868,231.77/112,395.93
  6. Step 6: Final answer
    x = 84,743.89

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.