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Finding the Fourth Proportional to 139,166.73, 192,050.06 and 78,736.14

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Solution

The fourth proportional to 139,166.73, 192,050.06 and 78,736.14 is: 108,655.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,166.73 : 192,050.06 = 78,736.14 : x
  2. Step 2: Convert to fraction form
    139,166.73/192,050.06 = 78,736.14/x
  3. Step 3: Cross multiply
    139,166.73x = 192,050.06 × 78,736.14
  4. Step 4: Simplify right side
    139,166.73x = 15,121,280,017.49
  5. Step 5: Solve for x
    x = 15,121,280,017.49/139,166.73
  6. Step 6: Final answer
    x = 108,655.85

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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.