Home / 112,391.79-155,135.57-69,384.84

Finding the Fourth Proportional to 112,391.79, 155,135.57 and 69,384.84

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Solution

The fourth proportional to 112,391.79, 155,135.57 and 69,384.84 is: 95,772.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,391.79 : 155,135.57 = 69,384.84 : x
  2. Step 2: Convert to fraction form
    112,391.79/155,135.57 = 69,384.84/x
  3. Step 3: Cross multiply
    112,391.79x = 155,135.57 × 69,384.84
  4. Step 4: Simplify right side
    112,391.79x = 10,764,056,355.83
  5. Step 5: Solve for x
    x = 10,764,056,355.83/112,391.79
  6. Step 6: Final answer
    x = 95,772.62

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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.