Home / 208,131.34-287,221.23-112,638.06

Finding the Fourth Proportional to 208,131.34, 287,221.23 and 112,638.06

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Solution

The fourth proportional to 208,131.34, 287,221.23 and 112,638.06 is: 155,440.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,131.34 : 287,221.23 = 112,638.06 : x
  2. Step 2: Convert to fraction form
    208,131.34/287,221.23 = 112,638.06/x
  3. Step 3: Cross multiply
    208,131.34x = 287,221.23 × 112,638.06
  4. Step 4: Simplify right side
    208,131.34x = 32,352,042,138.01
  5. Step 5: Solve for x
    x = 32,352,042,138.01/208,131.34
  6. Step 6: Final answer
    x = 155,440.51

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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.