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Finding the Fourth Proportional to 139,775.76, 192,890.82 and 76,113.84

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Solution

The fourth proportional to 139,775.76, 192,890.82 and 76,113.84 is: 105,037.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,775.76 : 192,890.82 = 76,113.84 : x
  2. Step 2: Convert to fraction form
    139,775.76/192,890.82 = 76,113.84/x
  3. Step 3: Cross multiply
    139,775.76x = 192,890.82 × 76,113.84
  4. Step 4: Simplify right side
    139,775.76x = 14,681,661,010.95
  5. Step 5: Solve for x
    x = 14,681,661,010.95/139,775.76
  6. Step 6: Final answer
    x = 105,037.25

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1.5x scale

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.