Home / 208,422.90-287,623.85-112,929.57

Finding the Fourth Proportional to 208,422.90, 287,623.85 and 112,929.57

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Solution

The fourth proportional to 208,422.90, 287,623.85 and 112,929.57 is: 155,842.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,422.90 : 287,623.85 = 112,929.57 : x
  2. Step 2: Convert to fraction form
    208,422.90/287,623.85 = 112,929.57/x
  3. Step 3: Cross multiply
    208,422.90x = 287,623.85 × 112,929.57
  4. Step 4: Simplify right side
    208,422.90x = 32,481,237,137.60
  5. Step 5: Solve for x
    x = 32,481,237,137.60/208,422.90
  6. Step 6: Final answer
    x = 155,842.94

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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.