Home / 208,383.98-287,569.87-112,890.65

Finding the Fourth Proportional to 208,383.98, 287,569.87 and 112,890.65

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Solution

The fourth proportional to 208,383.98, 287,569.87 and 112,890.65 is: 155,789.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,383.98 : 287,569.87 = 112,890.65 : x
  2. Step 2: Convert to fraction form
    208,383.98/287,569.87 = 112,890.65/x
  3. Step 3: Cross multiply
    208,383.98x = 287,569.87 × 112,890.65
  4. Step 4: Simplify right side
    208,383.98x = 32,463,949,981.41
  5. Step 5: Solve for x
    x = 32,463,949,981.41/208,383.98
  6. Step 6: Final answer
    x = 155,789.09

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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.