Home / 208,163.28-287,265.10-112,669.82

Finding the Fourth Proportional to 208,163.28, 287,265.10 and 112,669.82

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Solution

The fourth proportional to 208,163.28, 287,265.10 and 112,669.82 is: 155,484.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,163.28 : 287,265.10 = 112,669.82 : x
  2. Step 2: Convert to fraction form
    208,163.28/287,265.10 = 112,669.82/x
  3. Step 3: Cross multiply
    208,163.28x = 287,265.10 × 112,669.82
  4. Step 4: Simplify right side
    208,163.28x = 32,366,107,109.28
  5. Step 5: Solve for x
    x = 32,366,107,109.28/208,163.28
  6. Step 6: Final answer
    x = 155,484.23

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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.