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Finding the Fourth Proportional to 99,750.86, 137,656.19 and 63,940.94

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Solution

The fourth proportional to 99,750.86, 137,656.19 and 63,940.94 is: 88,238.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,750.86 : 137,656.19 = 63,940.94 : x
  2. Step 2: Convert to fraction form
    99,750.86/137,656.19 = 63,940.94/x
  3. Step 3: Cross multiply
    99,750.86x = 137,656.19 × 63,940.94
  4. Step 4: Simplify right side
    99,750.86x = 8,801,866,947.52
  5. Step 5: Solve for x
    x = 8,801,866,947.52/99,750.86
  6. Step 6: Final answer
    x = 88,238.51

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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.