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Finding the Fourth Proportional to 111,409.66, 153,745.58 and 63,662.89

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Solution

The fourth proportional to 111,409.66, 153,745.58 and 63,662.89 is: 87,854.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,409.66 : 153,745.58 = 63,662.89 : x
  2. Step 2: Convert to fraction form
    111,409.66/153,745.58 = 63,662.89/x
  3. Step 3: Cross multiply
    111,409.66x = 153,745.58 × 63,662.89
  4. Step 4: Simplify right side
    111,409.66x = 9,787,887,947.53
  5. Step 5: Solve for x
    x = 9,787,887,947.53/111,409.66
  6. Step 6: Final answer
    x = 87,854.93

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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.