Home / 112,845.25-155,730.43-61,857.95

Finding the Fourth Proportional to 112,845.25, 155,730.43 and 61,857.95

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Solution

The fourth proportional to 112,845.25, 155,730.43 and 61,857.95 is: 85,366.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,845.25 : 155,730.43 = 61,857.95 : x
  2. Step 2: Convert to fraction form
    112,845.25/155,730.43 = 61,857.95/x
  3. Step 3: Cross multiply
    112,845.25x = 155,730.43 × 61,857.95
  4. Step 4: Simplify right side
    112,845.25x = 9,633,164,451.09
  5. Step 5: Solve for x
    x = 9,633,164,451.09/112,845.25
  6. Step 6: Final answer
    x = 85,366.15

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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.