Home / 112,604.40-155,369.68-71,784

Finding the Fourth Proportional to 112,604.40, 155,369.68 and 71,784

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Solution

The fourth proportional to 112,604.40, 155,369.68 and 71,784 is: 99,046.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,604.40 : 155,369.68 = 71,784 : x
  2. Step 2: Convert to fraction form
    112,604.40/155,369.68 = 71,784/x
  3. Step 3: Cross multiply
    112,604.40x = 155,369.68 × 71,784
  4. Step 4: Simplify right side
    112,604.40x = 11,153,057,109.12
  5. Step 5: Solve for x
    x = 11,153,057,109.12/112,604.40
  6. Step 6: Final answer
    x = 99,046.37

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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.