Home / 208,426.77-287,625.18-117,780.79

Finding the Fourth Proportional to 208,426.77, 287,625.18 and 117,780.79

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Solution

The fourth proportional to 208,426.77, 287,625.18 and 117,780.79 is: 162,535.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,426.77 : 287,625.18 = 117,780.79 : x
  2. Step 2: Convert to fraction form
    208,426.77/287,625.18 = 117,780.79/x
  3. Step 3: Cross multiply
    208,426.77x = 287,625.18 × 117,780.79
  4. Step 4: Simplify right side
    208,426.77x = 33,876,720,924.29
  5. Step 5: Solve for x
    x = 33,876,720,924.29/208,426.77
  6. Step 6: Final answer
    x = 162,535.36

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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.