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Finding the Fourth Proportional to 139,006.95, 191,829.79 and 75,344.73

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Solution

The fourth proportional to 139,006.95, 191,829.79 and 75,344.73 is: 103,975.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,006.95 : 191,829.79 = 75,344.73 : x
  2. Step 2: Convert to fraction form
    139,006.95/191,829.79 = 75,344.73/x
  3. Step 3: Cross multiply
    139,006.95x = 191,829.79 × 75,344.73
  4. Step 4: Simplify right side
    139,006.95x = 14,453,363,733.51
  5. Step 5: Solve for x
    x = 14,453,363,733.51/139,006.95
  6. Step 6: Final answer
    x = 103,975.84

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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.