Home / 208,513.23-287,763.20-117,876.66

Finding the Fourth Proportional to 208,513.23, 287,763.20 and 117,876.66

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Solution

The fourth proportional to 208,513.23, 287,763.20 and 117,876.66 is: 162,678.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,513.23 : 287,763.20 = 117,876.66 : x
  2. Step 2: Convert to fraction form
    208,513.23/287,763.20 = 117,876.66/x
  3. Step 3: Cross multiply
    208,513.23x = 287,763.20 × 117,876.66
  4. Step 4: Simplify right side
    208,513.23x = 33,920,564,886.91
  5. Step 5: Solve for x
    x = 33,920,564,886.91/208,513.23
  6. Step 6: Final answer
    x = 162,678.24

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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.