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Finding the Fourth Proportional to 112,326, 155,027.16 and 67,639.92

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Solution

The fourth proportional to 112,326, 155,027.16 and 67,639.92 is: 93,353.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,326 : 155,027.16 = 67,639.92 : x
  2. Step 2: Convert to fraction form
    112,326/155,027.16 = 67,639.92/x
  3. Step 3: Cross multiply
    112,326x = 155,027.16 × 67,639.92
  4. Step 4: Simplify right side
    112,326x = 10,486,024,700.23
  5. Step 5: Solve for x
    x = 10,486,024,700.23/112,326
  6. Step 6: Final answer
    x = 93,353.50

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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.